1967.0000000;-1.5298128
1968.0000000;-0.2046150
1969.0000000;-0.4005783
1970.0000000;-0.8919645
1971.0000000;-1.3151630
1972.0000000;-0.1232832
1973.0000000;-0.7205940
1974.0000000;-1.2157749
1975.0000000;-0.5553690
1976.0000000;-0.5815526
1977.0000000;0.5240480
1978.0000000;0.2983370
1979.0000000;-1.1731796
1980.0000000;-0.3693493
1981.0000000;-0.2857339
1982.0000000;-1.2606043
1983.0000000;-0.5159568
1984.0000000;0.4422480
1985.0000000;-0.2258069
1986.0000000;-1.3571302
1987.0000000;-1.1836753
1988.0000000;-1.2516673
1989.0000000;-1.6297917
1990.0000000;-1.4356239
1991.0000000;-1.7962077
1992.0000000;-1.6086915
1993.0000000;-0.7830788
1994.0000000;-0.7395366
1995.0000000;-0.0095279
1996.0000000;-1.0064007
1997.0000000;-1.0563176
1998.0000000;-1.9449999
1999.0000000;-0.9018979
2000.0000000;-1.0324935
2001.0000000;0.5786713
2002.0000000;0.1900647
2003.0000000;-2.1990993
2004.0000000;-1.9402484
2005.0000000;-1.7856607
2006.0000000;-1.5880758
2007.0000000;-1.3985964
2008.0000000;-1.0923663
2009.0000000;-1.6386228
2010.0000000;-1.0111320
2011.0000000;-1.7725794
2012.0000000;-1.8966093
2013.0000000;-1.1067635
2014.0000000;-1.1983311
2015.0000000;-1.2577289