1967.0000000;-1.4477267
1968.0000000;0.1748619
1969.0000000;-0.9819490
1970.0000000;-0.4791418
1971.0000000;-1.6845362
1972.0000000;-0.6342897
1973.0000000;-1.0298187
1974.0000000;-0.8767140
1975.0000000;-0.9519917
1976.0000000;-1.5358450
1977.0000000;-0.7258045
1978.0000000;0.0095085
1979.0000000;-0.8547727
1980.0000000;-0.1731976
1981.0000000;-0.4850444
1982.0000000;-0.4822389
1983.0000000;-0.5000767
1984.0000000;1.4405749
1985.0000000;0.6096979
1986.0000000;-1.4148425
1987.0000000;-0.5443854
1988.0000000;0.4380293
1989.0000000;-1.4512781
1990.0000000;-1.5368274
1991.0000000;-1.8194395
1992.0000000;-1.4773355
1993.0000000;-0.9128900
1994.0000000;-0.7812707
1995.0000000;0.7944887
1996.0000000;-0.3325696
1997.0000000;-0.7942253
1998.0000000;-1.7011628
1999.0000000;-0.7939242
2000.0000000;-1.2098680
2001.0000000;0.6571583
2002.0000000;-0.4812207
2003.0000000;-2.3963604
2004.0000000;-2.0560422
2005.0000000;-2.0220904
2006.0000000;-1.5719426
2007.0000000;-0.9502940
2008.0000000;-1.5649841
2009.0000000;-2.1213036
2010.0000000;-0.9810126
2011.0000000;-2.0652421
2012.0000000;-2.3001728
2013.0000000;-1.0702791
2014.0000000;-0.5258183
2015.0000000;-1.8456125