Year,Site,Mean,SE,Sample 
1859,Den,0.50525,0.12175,2
1860,Den,0.45525,0.04075,2
1861,Den,0.49525,0.15625,2
1862,Den,0.50075,0.15125,2
1863,Den,0.336,0.0105,2
1864,Den,0.60925,0.15025,2
1865,Den,0.47625,0.10275,2
1866,Den,0.397,0.0835,2
1867,Den,0.2825,0.0225,2
1868,Den,0.383666667,0.056847994,3
1869,Den,0.319,0.046981379,3
1870,Den,0.452,0.007522189,3
1871,Den,0.3765,0.059378026,3
1872,Den,0.5585,0.209509049,4
1873,Den,0.65975,0.213344938,4
1874,Den,0.558125,0.201098481,4
1875,Den,0.603375,0.1935304,4
1876,Den,0.52875,0.183285126,4
1877,Den,0.611375,0.171407577,4
1878,Den,0.868916667,0.268915644,6
1879,Den,0.622833333,0.164697079,6
1880,Den,1.023142857,0.252250813,7
1881,Den,1.1195625,0.241326439,8
1882,Den,0.990166667,0.172731728,9
1883,Den,1.043611111,0.156893603,9
1884,Den,1.13345,0.161952607,10
1885,Den,1.074136364,0.167072209,11
1886,Den,1.097818182,0.172816314,11
1887,Den,1.1875,0.201430701,11
1888,Den,0.953958333,0.154741799,12
1889,Den,0.822166667,0.138546887,12
1890,Den,0.940653846,0.123572041,13
1891,Den,0.864,0.103609273,13
1892,Den,0.930230769,0.123564833,13
1893,Den,0.968807692,0.127933471,13
1894,Den,1.044615385,0.142080446,13
1895,Den,1.151115385,0.161128733,13
1896,Den,0.938357143,0.128268428,14
1897,Den,0.919678571,0.143251149,14
1898,Den,0.870928571,0.121668369,14
1899,Den,0.824,0.117205828,14
1900,Den,1.026366667,0.151639912,15
1901,Den,0.855366667,0.121001776,15
1902,Den,0.900766667,0.141948917,15
1903,Den,0.936933333,0.140017931,15
1904,Den,0.868766667,0.132746015,15
1905,Den,0.9302,0.136487491,15
1906,Den,0.8117,0.107737134,15
1907,Den,0.796533333,0.108372137,15
1908,Den,0.824,0.104652452,15
1909,Den,0.733266667,0.088640873,15
1910,Den,0.754533333,0.088777296,15
1911,Den,0.8464,0.113821071,15
1912,Den,0.815033333,0.095366043,15
1913,Den,0.969633333,0.112971704,15
1914,Den,0.767466667,0.092802228,15
1915,Den,0.7536,0.074075206,15
1916,Den,0.876,0.091936352,15
1917,Den,0.801133333,0.076880604,15
1918,Den,0.831966667,0.068195229,15
1919,Den,0.912066667,0.076203126,15
1920,Den,0.796133333,0.068951388,15
1921,Den,0.8611,0.079155531,15
1922,Den,0.770566667,0.079623771,15
1923,Den,0.690766667,0.082116741,15
1924,Den,0.70309375,0.096173067,16
1925,Den,0.7371875,0.103246266,16
1926,Den,0.866294118,0.095859167,17
1927,Den,0.761,0.076656606,17
1928,Den,0.789611111,0.080882061,18
1929,Den,0.790473684,0.097766606,19
1930,Den,0.940026316,0.128742793,19
1931,Den,0.7233,0.120729822,20
1932,Den,0.9415,0.134096696,21
1933,Den,0.89,0.102612081,22
1934,Den,0.927590909,0.102739708,22
1935,Den,1.038568182,0.096072474,22
1936,Den,0.981159091,0.095488805,22
1937,Den,0.847409091,0.102617595,22
1938,Den,0.933318182,0.11122375,22
1939,Den,0.933113636,0.121133968,22
1940,Den,0.870795455,0.101586584,22
1941,Den,1.037869565,0.142391333,23
1942,Den,0.938673913,0.122198607,23
1943,Den,1.130434783,0.129221718,23
1944,Den,1.229583333,0.118899462,24
1945,Den,0.97476,0.098226363,25
1946,Den,1.22242,0.120444841,25
1947,Den,0.93146,0.101665231,25
1948,Den,1.0637,0.095738302,25
1949,Den,0.87546,0.077024877,25
1950,Den,0.913596154,0.068975185,26
1951,Den,0.941980769,0.067665253,26
1952,Den,0.768557692,0.056420102,26
1953,Den,1.019740741,0.078593654,27
1954,Den,1.11862963,0.080778811,27
1955,Den,0.943111111,0.080423498,27
1956,Den,0.883648148,0.072523274,27
1957,Den,1.108925926,0.104035458,27
1958,Den,1.122035714,0.234459685,28
1959,Den,1.035051724,0.144030704,29
1960,Den,0.897413793,0.097416852,29
1961,Den,1.097465517,0.121483533,29
1962,Den,1.147466667,0.123690018,30
1963,Den,1.214283333,0.112317056,30
1964,Den,1.057316667,0.099422844,30
1965,Den,1.227032258,0.121304232,31
1966,Den,1.371935484,0.124482256,31
1967,Den,0.975546875,0.112552878,32
1968,Den,0.915140625,0.110219382,32
1969,Den,1.060818182,0.106993767,33
1970,Den,1.123848485,0.101346878,33
1971,Den,0.925515152,0.10156595,33
1972,Den,1.052681818,0.099272243,33
1973,Den,0.905318182,0.073163681,33
1974,Den,1.022220588,0.148645915,34
1975,Den,0.920472222,0.120367381,36
1976,Den,1.090256757,0.122080074,37
1977,Den,1.116171053,0.131128617,38
1978,Den,0.998039474,0.113406442,38
1979,Den,1.028315789,0.119976385,38
1980,Den,0.96881579,0.115383901,38
1981,Den,1.233184211,0.142672487,38
1982,Den,0.970710526,0.1085105,38
1983,Den,1.237631579,0.128998709,38
1984,Den,1.131907895,0.108448388,38
1985,Den,1.085384615,0.109585987,39
1986,Den,1.230333333,0.118446295,39
1987,Den,1.1332625,0.117477484,40
1988,Den,1.103025,0.118973341,40
1989,Den,0.9789875,0.099084229,40
1990,Den,1.1205125,0.118387557,40
1991,Den,1.1621125,0.12445057,40
1992,Den,0.820325,0.085446759,40
1993,Den,1.0808875,0.097789568,40
1994,Den,1.0201,0.095219243,40
1995,Den,1.0716875,0.114546451,40
1996,Den,1.084875,0.119562549,40
1997,Den,0.982175,0.097509514,40
1998,Den,1.0053625,0.09582192,40
1999,Den,1.084175,0.097057144,40
2000,Den,1.0201375,0.102614792,40
2001,Den,1.171525,0.122895223,40
2002,Den,1.312166667,0.137563897,39
2003,Den,1.455435897,0.147227115,39
2004,Den,1.201884615,0.130535623,39
2005,Den,1.397820513,0.145768904,39
2006,Den,1.188730769,0.109569645,39
2007,Den,1.069576923,0.093921198,39
2008,Den,1.028320513,0.082036175,39
2009,Den,0.799641026,0.07145937,39
2010,Den,1.111564103,0.093169151,39
2011,Den,0.931179487,0.08773953,39
2012,Den,0.915641026,0.101179111,39
2013,Den,1.022092105,0.107300881,38
2014,Den,1.015302632,0.105938127,38
2015,Den,0.952157895,0.099958494,38
2016,Den,0.941552632,0.104368757,38
2017,Den,1.025315789,0.109567497,38
1827,Control,0.44425,0.16425,2
1828,Control,0.51575,0.20125,2
1829,Control,0.451,0.202,2
1830,Control,0.4145,0.2625,2
1831,Control,0.37975,0.20625,2
1832,Control,0.4155,0.2605,2
1833,Control,0.51275,0.32975,2
1834,Control,0.41975,0.22325,2
1835,Control,0.3255,0.1265,2
1836,Control,0.39025,0.19825,2
1837,Control,0.3745,0.1475,2
1838,Control,0.4705,0.162,2
1839,Control,0.28425,0.07525,2
1840,Control,0.31725,0.07275,2
1841,Control,0.4195,0.095,2
1842,Control,0.3775,0.1325,2
1843,Control,0.359,0.121,2
1844,Control,0.29025,0.09225,2
1845,Control,0.3235,0.0765,2
1846,Control,0.32525,0.09625,2
1847,Control,0.33375,0.13125,2
1848,Control,0.30975,0.12125,2
1849,Control,0.48125,0.27025,2
1850,Control,0.495,0.217,2
1851,Control,0.4545,0.1925,2
1852,Control,0.44575,0.17875,2
1853,Control,0.43875,0.11425,2
1854,Control,0.352,0.058,2
1855,Control,0.4035,0.1465,2
1856,Control,0.452,0.1405,2
1857,Control,0.31825,0.06525,2
1858,Control,0.38625,0.11825,2
1859,Control,0.3595,0.1225,2
1860,Control,0.39175,0.07425,2
1861,Control,0.409166667,0.052979031,3
1862,Control,0.358166667,0.05543189,3
1863,Control,0.347666667,0.041134265,3
1864,Control,0.429833333,0.088883976,3
1865,Control,0.344333333,0.065437205,3
1866,Control,0.356833333,0.073683068,3
1867,Control,0.250333333,0.048761608,3
1868,Control,0.311375,0.038435755,4
1869,Control,0.267,0.018984643,4
1870,Control,0.33875,0.069789117,4
1871,Control,0.35075,0.099048073,4
1872,Control,0.3913,0.097142627,5
1873,Control,0.3764,0.099638145,5
1874,Control,0.3204,0.072664709,5
1875,Control,0.3237,0.083405725,5
1876,Control,0.2999,0.077077461,5
1877,Control,0.3499,0.106984041,5
1878,Control,0.363666667,0.088247726,6
1879,Control,0.3695,0.086896682,6
1880,Control,0.436416667,0.06720211,6
1881,Control,0.452166667,0.081479411,6
1882,Control,0.453666667,0.099968217,6
1883,Control,0.438583333,0.084706593,6
1884,Control,0.453583333,0.098654567,6
1885,Control,0.463583333,0.114918407,6
1886,Control,0.514083333,0.123397692,6
1887,Control,0.462357143,0.078122364,7
1888,Control,0.4195,0.094282125,7
1889,Control,0.606,0.224088929,8
1890,Control,0.5986875,0.20080194,8
1891,Control,0.50675,0.118931478,8
1892,Control,0.480125,0.121997173,8
1893,Control,0.486375,0.118597675,8
1894,Control,0.451666667,0.087761277,9
1895,Control,0.558333333,0.091600089,9
1896,Control,0.527666667,0.085482901,9
1897,Control,0.591454545,0.096520593,11
1898,Control,0.511545455,0.07922346,11
1899,Control,0.519636364,0.071790766,11
1900,Control,0.636545455,0.095647612,11
1901,Control,0.557772727,0.081203123,11
1902,Control,0.550590909,0.087271776,11
1903,Control,0.579333333,0.069092202,12
1904,Control,0.552083333,0.082926374,12
1905,Control,0.574416667,0.083322048,12
1906,Control,0.578333333,0.095175423,12
1907,Control,0.516708333,0.074525988,12
1908,Control,0.5035,0.070121567,12
1909,Control,0.447541667,0.057926627,12
1910,Control,0.533807692,0.0842504,13
1911,Control,0.528423077,0.085636902,13
1912,Control,0.51021875,0.059790101,16
1913,Control,0.520205882,0.057200757,17
1914,Control,0.423166667,0.051422669,18
1915,Control,0.442277778,0.057084406,18
1916,Control,0.490075,0.052682131,20
1917,Control,0.507190476,0.055285563,21
1918,Control,0.46847619,0.048146991,21
1919,Control,0.490809524,0.050345112,21
1920,Control,0.470071429,0.050413909,21
1921,Control,0.563404762,0.063488981,21
1922,Control,0.495452381,0.057776137,21
1923,Control,0.471977273,0.044733972,22
1924,Control,0.462195652,0.049870472,23
1925,Control,0.516152174,0.056901833,23
1926,Control,0.622583333,0.082155515,24
1927,Control,0.6103125,0.061730611,24
1928,Control,0.6759,0.062480737,25
1929,Control,0.6574,0.066215387,25
1930,Control,0.70594,0.061990425,25
1931,Control,0.56694,0.060308197,25
1932,Control,0.70292,0.069143532,25
1933,Control,0.63464,0.060899648,25
1934,Control,0.71022,0.067145893,25
1935,Control,0.79652,0.07447953,25
1936,Control,0.77128,0.082306131,25
1937,Control,0.699519231,0.070733462,26
1938,Control,0.716,0.066575493,27
1939,Control,0.644481481,0.065282072,27
1940,Control,0.639388889,0.054623461,27
1941,Control,0.620446429,0.061184237,28
1942,Control,0.658017241,0.059156621,29
1943,Control,0.783310345,0.067959934,29
1944,Control,0.860806452,0.094885995,31
1945,Control,0.641322581,0.071954363,31
1946,Control,0.84484375,0.088895174,32
1947,Control,0.77121875,0.081378951,32
1948,Control,0.794924242,0.078894643,33
1949,Control,0.632954545,0.061611881,33
1950,Control,0.688515152,0.0626001,33
1951,Control,0.685560606,0.061181056,33
1952,Control,0.5585,0.044707123,34
1953,Control,0.594814286,0.048438751,35
1954,Control,0.731114286,0.062547797,35
1955,Control,0.688157143,0.063818215,35
1956,Control,0.652114286,0.057003789,35
1957,Control,0.784457143,0.064978986,35
1958,Control,0.645071429,0.058263835,35
1959,Control,0.688742857,0.063251417,35
1960,Control,0.610842857,0.049469674,35
1961,Control,0.693657143,0.051684075,35
1962,Control,0.787621622,0.059482593,37
1963,Control,0.881135135,0.06584795,37
1964,Control,0.748539474,0.052060018,38
1965,Control,0.869381579,0.061584341,38
1966,Control,1.001294872,0.077905648,39
1967,Control,0.771589744,0.069425984,39
1968,Control,0.717410256,0.05979841,39
1969,Control,0.786038462,0.068309169,39
1970,Control,0.802153846,0.061959831,39
1971,Control,0.700538462,0.061129352,39
1972,Control,0.791125,0.063883748,40
1973,Control,0.6347125,0.050349413,40
1974,Control,0.6388875,0.060051688,40
1975,Control,0.621775,0.056284946,40
1976,Control,0.7281625,0.06508708,40
1977,Control,0.7777375,0.066557354,40
1978,Control,0.6811875,0.057890751,40
1979,Control,0.686425,0.062126831,40
1980,Control,0.6118625,0.056944673,40
1981,Control,0.8128625,0.07401768,40
1982,Control,0.622375,0.055821627,40
1983,Control,0.79635,0.063171529,40
1984,Control,0.6738,0.055510258,40
1985,Control,0.6281125,0.05166425,40
1986,Control,0.728925,0.055960925,40
1987,Control,0.689475,0.057209976,40
1988,Control,0.683375,0.059746389,40
1989,Control,0.6571,0.055057287,40
1990,Control,0.7233375,0.06417642,40
1991,Control,0.6988,0.069237481,40
1992,Control,0.4639125,0.045829428,40
1993,Control,0.607,0.055128039,40
1994,Control,0.6107875,0.062783745,40
1995,Control,0.6287,0.06907752,40
1996,Control,0.60675,0.058018308,40
1997,Control,0.63025,0.058390353,40
1998,Control,0.5500625,0.050714113,40
1999,Control,0.5772625,0.04967525,40
2000,Control,0.6242,0.054383744,40
2001,Control,0.69,0.060544956,40
2002,Control,0.7380625,0.070619757,40
2003,Control,0.7304875,0.06770306,40
2004,Control,0.6916625,0.061815615,40
2005,Control,0.834575,0.071430302,40
2006,Control,0.68645,0.061552346,40
2007,Control,0.5992875,0.046088873,40
2008,Control,0.6044,0.045945296,40
2009,Control,0.4529375,0.038155036,40
2010,Control,0.6488875,0.052451123,40
2011,Control,0.555,0.049295989,40
2012,Control,0.5297125,0.044263097,40
2013,Control,0.6058125,0.052105329,40
2014,Control,0.5829125,0.047571124,40
2015,Control,0.5655125,0.045096931,40
2016,Control,0.5502375,0.046043044,40
2017,Control,0.6235,0.052720784,40