1967.0000000;-1.6501698
1968.0000000;0.5007287
1969.0000000;-0.3949818
1970.0000000;-0.9785948
1971.0000000;-0.5769148
1972.0000000;-0.0114034
1973.0000000;-1.4503034
1974.0000000;-1.3087881
1975.0000000;-0.7026951
1976.0000000;-1.2885643
1977.0000000;0.7355542
1978.0000000;0.3546845
1979.0000000;-0.5387722
1980.0000000;-0.3050907
1981.0000000;-1.1668022
1982.0000000;-0.9604520
1983.0000000;-0.3370180
1984.0000000;0.3560150
1985.0000000;-0.9645303
1986.0000000;-1.3059038
1987.0000000;-0.6627192
1988.0000000;-0.3531348
1989.0000000;-1.6002171
1990.0000000;-0.9712742
1991.0000000;-1.2417666
1992.0000000;-0.9034790
1993.0000000;-0.9322863
1994.0000000;-0.5710642
1995.0000000;-0.2522067
1996.0000000;-0.3946363
1997.0000000;-0.4798956
1998.0000000;-1.7195158
1999.0000000;-1.2923259
2000.0000000;-1.3614283
2001.0000000;0.3540726
2002.0000000;-0.9178863
2003.0000000;-2.1754873
2004.0000000;-1.9861932
2005.0000000;-2.1762500
2006.0000000;-1.6390243
2007.0000000;-1.6363590
2008.0000000;-0.9464635
2009.0000000;-1.7183263
2010.0000000;-0.7690889
2011.0000000;-2.0291877
2012.0000000;-1.7822173
2013.0000000;-0.8416672
2014.0000000;-0.9623280
2015.0000000;-1.8745408