1967.0000000;-1.6780479
1968.0000000;0.0927231
1969.0000000;-1.2702522
1970.0000000;-0.5967774
1971.0000000;-1.6837618
1972.0000000;-0.7825544
1973.0000000;-0.9053830
1974.0000000;-0.9475080
1975.0000000;-0.9551178
1976.0000000;-1.5065989
1977.0000000;-0.2043280
1978.0000000;0.1256272
1979.0000000;-0.4122539
1980.0000000;-0.2811172
1981.0000000;-0.4579018
1982.0000000;-0.0877249
1983.0000000;-0.1894411
1984.0000000;1.2892138
1985.0000000;0.9616327
1986.0000000;-1.3452438
1987.0000000;-0.2615534
1988.0000000;0.1553280
1989.0000000;-1.5258510
1990.0000000;-1.7137967
1991.0000000;-1.9650047
1992.0000000;-1.4941266
1993.0000000;-0.8019933
1994.0000000;-0.6340809
1995.0000000;0.7096223
1996.0000000;-0.5082340
1997.0000000;-0.6872026
1998.0000000;-1.8973057
1999.0000000;-0.7491264
2000.0000000;-1.1158202
2001.0000000;0.7923040
2002.0000000;-0.6368086
2003.0000000;-2.4056716
2004.0000000;-2.1447368
2005.0000000;-2.2367294
2006.0000000;-1.6107473
2007.0000000;-1.0355965
2008.0000000;-1.7786586
2009.0000000;-2.2199922
2010.0000000;-1.4229047
2011.0000000;-2.2350404
2012.0000000;-2.4742379
2013.0000000;-1.1306229
2014.0000000;-1.0267503
2015.0000000;-1.9792984