1967.0000000;-1.3722146
1968.0000000;0.7307855
1969.0000000;-0.2357950
1970.0000000;-0.7738049
1971.0000000;-0.4342340
1972.0000000;0.0986657
1973.0000000;-0.3945615
1974.0000000;-0.8314107
1975.0000000;-0.3053088
1976.0000000;-0.8615173
1977.0000000;0.5389922
1978.0000000;0.1617615
1979.0000000;-0.4957607
1980.0000000;-0.4093797
1981.0000000;-0.8948103
1982.0000000;-0.9482327
1983.0000000;-0.2145439
1984.0000000;0.3401879
1985.0000000;-0.7645426
1986.0000000;-1.3124505
1987.0000000;-0.3331189
1988.0000000;-0.6097305
1989.0000000;-1.5247979
1990.0000000;-0.4406475
1991.0000000;-1.1259003
1992.0000000;-0.6616901
1993.0000000;-0.6708747
1994.0000000;-0.5433940
1995.0000000;0.2356005
1996.0000000;0.0200259
1997.0000000;-0.3760067
1998.0000000;-1.5171890
1999.0000000;-0.8571541
2000.0000000;-1.0496578
2001.0000000;0.4747668
2002.0000000;-0.1658185
2003.0000000;-1.9045968
2004.0000000;-1.7933536
2005.0000000;-1.9344175
2006.0000000;-1.4076645
2007.0000000;-1.0137289
2008.0000000;-0.5551987
2009.0000000;-1.4571247
2010.0000000;-0.6506737
2011.0000000;-1.8070972
2012.0000000;-1.5719373
2013.0000000;-0.6385732
2014.0000000;-0.8119273
2015.0000000;-1.3846254