1967.0000000;-0.8255519
1968.0000000;0.2898851
1969.0000000;-0.2072867
1970.0000000;-0.6855962
1971.0000000;-0.6966828
1972.0000000;-0.0408033
1973.0000000;-1.2865660
1974.0000000;-0.8847817
1975.0000000;0.1224936
1976.0000000;-0.8704728
1977.0000000;0.5753560
1978.0000000;0.5683422
1979.0000000;-0.3263281
1980.0000000;0.2256607
1981.0000000;-0.0950157
1982.0000000;-0.1508518
1983.0000000;-0.2428920
1984.0000000;0.4688092
1985.0000000;-0.4991741
1986.0000000;-1.3098330
1987.0000000;-0.4858915
1988.0000000;-0.0326935
1989.0000000;-1.5416422
1990.0000000;-1.0160490
1991.0000000;-0.7591835
1992.0000000;-0.8415762
1993.0000000;-0.5571947
1994.0000000;-0.2600834
1995.0000000;0.3915767
1996.0000000;-0.2402949
1997.0000000;-0.4191403
1998.0000000;-1.6356517
1999.0000000;-0.6977981
2000.0000000;-0.9641252
2001.0000000;0.8481718
2002.0000000;-1.0609370
2003.0000000;-2.7074265
2004.0000000;-2.0579491
2005.0000000;-2.2321563
2006.0000000;-1.9415035
2007.0000000;-1.2110375
2008.0000000;-1.0390038
2009.0000000;-2.2753093
2010.0000000;-0.5970192
2011.0000000;-2.3191593
2012.0000000;-1.8668051
2013.0000000;-0.5388161
2014.0000000;-0.6898304
2015.0000000;-1.8508286