1967.0000000;-1.1523843
1968.0000000;0.5994057
1969.0000000;-1.0015197
1970.0000000;-0.6120371
1971.0000000;-1.5137553
1972.0000000;-0.6175258
1973.0000000;-0.7350397
1974.0000000;-0.9921910
1975.0000000;-1.0896736
1976.0000000;-1.5037606
1977.0000000;0.1295858
1978.0000000;0.0261734
1979.0000000;-0.4155481
1980.0000000;-0.0671577
1981.0000000;-0.0818840
1982.0000000;0.0309851
1983.0000000;-0.1853924
1984.0000000;1.1868533
1985.0000000;0.9095385
1986.0000000;-1.1663811
1987.0000000;-0.1653607
1988.0000000;-0.1539775
1989.0000000;-1.3236406
1990.0000000;-1.7450156
1991.0000000;-1.7446437
1992.0000000;-1.7288308
1993.0000000;-0.9478261
1994.0000000;-0.8403298
1995.0000000;0.5218418
1996.0000000;-0.4182627
1997.0000000;-0.8868967
1998.0000000;-1.9174774
1999.0000000;-0.7614222
2000.0000000;-1.2475559
2001.0000000;0.9775819
2002.0000000;-0.5317638
2003.0000000;-2.2456241
2004.0000000;-2.0649586
2005.0000000;-2.0965838
2006.0000000;-1.3538547
2007.0000000;-1.2087116
2008.0000000;-1.6127009
2009.0000000;-1.9614458
2010.0000000;-1.2793031
2011.0000000;-1.9978307
2012.0000000;-2.2315657
2013.0000000;-1.1889490
2014.0000000;-1.3098109
2015.0000000;-2.0088325