1967.0000000;-1.1520677
1968.0000000;0.2296816
1969.0000000;-0.2604752
1970.0000000;-0.8899747
1971.0000000;-0.6436788
1972.0000000;-0.0143011
1973.0000000;-1.0164340
1974.0000000;-0.9818057
1975.0000000;-0.7440886
1976.0000000;-1.0679545
1977.0000000;0.7453819
1978.0000000;0.3537354
1979.0000000;-0.2624132
1980.0000000;-0.2565818
1981.0000000;-0.8532127
1982.0000000;-0.5586470
1983.0000000;-0.0580142
1984.0000000;0.1476912
1985.0000000;-0.7168260
1986.0000000;-1.3317897
1987.0000000;-0.5460538
1988.0000000;-0.5418064
1989.0000000;-1.5567776
1990.0000000;-0.7424245
1991.0000000;-0.9136385
1992.0000000;-0.6756651
1993.0000000;-0.7547858
1994.0000000;-0.4418187
1995.0000000;0.0838298
1996.0000000;0.1909734
1997.0000000;-0.3584033
1998.0000000;-1.4498107
1999.0000000;-0.9100479
2000.0000000;-1.2792553
2001.0000000;0.7942927
2002.0000000;-0.6789699
2003.0000000;-2.1428244
2004.0000000;-1.8448130
2005.0000000;-2.0653477
2006.0000000;-1.5178299
2007.0000000;-1.4600532
2008.0000000;-0.6476052
2009.0000000;-1.6545701
2010.0000000;-0.6645973
2011.0000000;-1.9746541
2012.0000000;-1.6760188
2013.0000000;-0.7913992
2014.0000000;-0.9858028
2015.0000000;-1.8004079