1967.0000000;-0.1128287
1968.0000000;-0.4142339
1969.0000000;-1.3276614
1970.0000000;-0.7074446
1971.0000000;-1.6393423
1972.0000000;-0.5989188
1973.0000000;-1.4746448
1974.0000000;-0.6995152
1975.0000000;-0.2441659
1976.0000000;-1.6270572
1977.0000000;0.3527210
1978.0000000;0.5470499
1979.0000000;0.2460055
1980.0000000;0.8571119
1981.0000000;0.3314923
1982.0000000;0.0995681
1983.0000000;-0.1591152
1984.0000000;0.4176241
1985.0000000;-0.0921966
1986.0000000;-1.5095475
1987.0000000;0.2559211
1988.0000000;0.2507629
1989.0000000;-1.7733452
1990.0000000;-1.5924710
1991.0000000;-1.6144061
1992.0000000;-0.7422279
1993.0000000;-0.6693506
1994.0000000;-1.2178109
1995.0000000;0.7584794
1996.0000000;-0.8507091
1997.0000000;-1.2008159
1998.0000000;-1.9174519
1999.0000000;-0.9343752
2000.0000000;-1.8051631
2001.0000000;-0.1259715
2002.0000000;-1.2537464
2003.0000000;-3.4375272
2004.0000000;-0.9825673
2005.0000000;-2.4664791
2006.0000000;-0.9941872
2007.0000000;-1.1242335
2008.0000000;-1.6577175
2009.0000000;-3.3441477
2010.0000000;-0.6870839
2011.0000000;-3.0532022
2012.0000000;-2.5231361
2013.0000000;-1.0850730
2014.0000000;-1.2500600
2015.0000000;-2.8258874