1967.0000000;-0.6186991
1968.0000000;0.8352121
1969.0000000;-0.3120111
1970.0000000;-0.2076990
1971.0000000;-1.0433198
1972.0000000;-0.3421651
1973.0000000;-0.7339056
1974.0000000;-0.7825443
1975.0000000;-0.7257782
1976.0000000;-1.2292542
1977.0000000;-0.0429684
1978.0000000;0.2547387
1979.0000000;-0.1032365
1980.0000000;0.2849422
1981.0000000;0.1117831
1982.0000000;-0.1329708
1983.0000000;-0.1137474
1984.0000000;1.4706829
1985.0000000;0.9919437
1986.0000000;-1.0353293
1987.0000000;0.1795885
1988.0000000;0.4588390
1989.0000000;-1.1165794
1990.0000000;-1.5519688
1991.0000000;-1.3824830
1992.0000000;-1.6209922
1993.0000000;-0.7298273
1994.0000000;-0.4787509
1995.0000000;0.8217940
1996.0000000;0.0192158
1997.0000000;-0.8106613
1998.0000000;-1.5980785
1999.0000000;-0.6356401
2000.0000000;-0.9599135
2001.0000000;0.9266990
2002.0000000;-0.3353881
2003.0000000;-2.2299626
2004.0000000;-1.8764877
2005.0000000;-1.8600450
2006.0000000;-1.0622084
2007.0000000;-0.8111856
2008.0000000;-1.4552656
2009.0000000;-1.8647830
2010.0000000;-0.9181267
2011.0000000;-2.0499468
2012.0000000;-2.1818802
2013.0000000;-0.9468936
2014.0000000;-1.2700969
2015.0000000;-2.0578210