1967.0000000;-0.9562938
1968.0000000;0.1929284
1969.0000000;-0.1240747
1970.0000000;-0.7509790
1971.0000000;-0.8107867
1972.0000000;-0.1454950
1973.0000000;-0.6357660
1974.0000000;-0.7677647
1975.0000000;0.0066570
1976.0000000;-0.2038569
1977.0000000;0.4270334
1978.0000000;0.4908723
1979.0000000;-0.4959688
1980.0000000;0.2160163
1981.0000000;0.1051840
1982.0000000;-0.4118527
1983.0000000;-0.5150012
1984.0000000;0.7016321
1985.0000000;0.2018900
1986.0000000;-1.2315929
1987.0000000;-0.5134727
1988.0000000;-0.5889531
1989.0000000;-1.5349343
1990.0000000;-1.4096534
1991.0000000;-1.6281216
1992.0000000;-1.4376129
1993.0000000;-0.6267047
1994.0000000;-0.4023653
1995.0000000;0.4134899
1996.0000000;-0.2495196
1997.0000000;-0.7533339
1998.0000000;-1.6696758
1999.0000000;-0.7594901
2000.0000000;-0.8073107
2001.0000000;0.6386126
2002.0000000;0.0531300
2003.0000000;-1.9368958
2004.0000000;-1.7749617
2005.0000000;-1.6882010
2006.0000000;-1.2584276
2007.0000000;-0.9380820
2008.0000000;-0.6898437
2009.0000000;-1.5087278
2010.0000000;-0.5917871
2011.0000000;-1.5740155
2012.0000000;-1.7246819
2013.0000000;-0.9955704
2014.0000000;-1.1536982
2015.0000000;-1.0769131