1967.0000000;-1.5806800
1968.0000000;0.4213668
1969.0000000;-0.2929900
1970.0000000;-1.0046444
1971.0000000;-0.2926190
1972.0000000;0.0566068
1973.0000000;-1.3438138
1974.0000000;-1.1480352
1975.0000000;-0.4130059
1976.0000000;-1.1038766
1977.0000000;0.7530702
1978.0000000;0.3199090
1979.0000000;-0.5278579
1980.0000000;-0.4194304
1981.0000000;-1.0053579
1982.0000000;-0.9783029
1983.0000000;-0.2472214
1984.0000000;0.2469051
1985.0000000;-1.0626745
1986.0000000;-1.4019049
1987.0000000;-0.6534522
1988.0000000;-0.5568418
1989.0000000;-1.6304207
1990.0000000;-0.6540264
1991.0000000;-1.0861740
1992.0000000;-0.7702321
1993.0000000;-0.6617481
1994.0000000;-0.4965289
1995.0000000;0.0937155
1996.0000000;-0.0483591
1997.0000000;-0.3045700
1998.0000000;-1.6123308
1999.0000000;-1.0146447
2000.0000000;-1.1804868
2001.0000000;0.7180472
2002.0000000;-0.5083635
2003.0000000;-2.0296330
2004.0000000;-1.8839939
2005.0000000;-2.1496992
2006.0000000;-1.5637132
2007.0000000;-1.3361970
2008.0000000;-0.7381281
2009.0000000;-1.6667567
2010.0000000;-0.6811941
2011.0000000;-2.0240922
2012.0000000;-1.7781854
2013.0000000;-0.8744631
2014.0000000;-0.9158992
2015.0000000;-1.7463691