1967.0000000;-0.2901897
1968.0000000;0.3349130
1969.0000000;-0.7371262
1970.0000000;-0.4649142
1971.0000000;-0.7211988
1972.0000000;-0.5253171
1973.0000000;-0.8210233
1974.0000000;-0.7917184
1975.0000000;-0.3570778
1976.0000000;-1.2509091
1977.0000000;0.3072026
1978.0000000;0.2975764
1979.0000000;-0.0105694
1980.0000000;0.6037188
1981.0000000;0.0900257
1982.0000000;-0.1880335
1983.0000000;-0.0948439
1984.0000000;0.8906229
1985.0000000;0.3269069
1986.0000000;-1.3500049
1987.0000000;0.1626406
1988.0000000;0.3334645
1989.0000000;-0.9231616
1990.0000000;-1.3218877
1991.0000000;-1.1894596
1992.0000000;-0.9110477
1993.0000000;-0.5417163
1994.0000000;-0.4560492
1995.0000000;0.8683774
1996.0000000;0.0159342
1997.0000000;-0.5994878
1998.0000000;-1.5074193
1999.0000000;-0.6693251
2000.0000000;-1.1239126
2001.0000000;0.6231320
2002.0000000;-0.5530683
2003.0000000;-2.6313577
2004.0000000;-1.7154211
2005.0000000;-1.9011977
2006.0000000;-1.0269346
2007.0000000;-0.5350293
2008.0000000;-1.3672543
2009.0000000;-2.6856108
2010.0000000;-0.5948426
2011.0000000;-2.5876360
2012.0000000;-2.4379983
2013.0000000;-1.0499763
2014.0000000;-0.9099913
2015.0000000;-2.3893981