1967.0000000;-1.0574483
1968.0000000;0.2399149
1969.0000000;-0.1779726
1970.0000000;-0.7353691
1971.0000000;-0.5915986
1972.0000000;-0.1335915
1973.0000000;-0.9103395
1974.0000000;-0.8431998
1975.0000000;-0.7722141
1976.0000000;-0.7145687
1977.0000000;0.5576160
1978.0000000;0.3996499
1979.0000000;0.0132740
1980.0000000;-0.1042271
1981.0000000;-0.7122616
1982.0000000;-0.3052487
1983.0000000;-0.1960324
1984.0000000;0.0887790
1985.0000000;-0.6361077
1986.0000000;-1.2214936
1987.0000000;-0.5611253
1988.0000000;-0.4042575
1989.0000000;-1.5312639
1990.0000000;-0.7685086
1991.0000000;-0.7952300
1992.0000000;-0.7755581
1993.0000000;-0.7345487
1994.0000000;-0.5840016
1995.0000000;0.0088028
1996.0000000;0.1309634
1997.0000000;-0.4389175
1998.0000000;-1.4010861
1999.0000000;-0.9268080
2000.0000000;-1.2754189
2001.0000000;0.6898273
2002.0000000;-0.6453342
2003.0000000;-2.1297626
2004.0000000;-1.7628162
2005.0000000;-2.0345893
2006.0000000;-1.4499335
2007.0000000;-1.2088444
2008.0000000;-0.6359936
2009.0000000;-1.5675082
2010.0000000;-0.5772643
2011.0000000;-1.8964251
2012.0000000;-1.5653616
2013.0000000;-0.6540326
2014.0000000;-0.9269088
2015.0000000;-1.9192938