1967.0000000;-1.5397960
1968.0000000;0.0939285
1969.0000000;-1.0906812
1970.0000000;-0.4424255
1971.0000000;-1.4703101
1972.0000000;-0.7648096
1973.0000000;-0.8452412
1974.0000000;-0.9794376
1975.0000000;-0.9105500
1976.0000000;-1.3981862
1977.0000000;-0.3229232
1978.0000000;-0.0333098
1979.0000000;-0.4442797
1980.0000000;-0.4057198
1981.0000000;-0.6939533
1982.0000000;-0.3023230
1983.0000000;-0.2948334
1984.0000000;1.0756642
1985.0000000;0.7452493
1986.0000000;-1.2070812
1987.0000000;-0.5839349
1988.0000000;-0.1817592
1989.0000000;-1.3798711
1990.0000000;-1.4530241
1991.0000000;-1.7683086
1992.0000000;-1.3516835
1993.0000000;-0.7835726
1994.0000000;-0.6114724
1995.0000000;0.5115911
1996.0000000;-0.3692343
1997.0000000;-0.6941876
1998.0000000;-1.7860017
1999.0000000;-0.5855502
2000.0000000;-1.0340350
2001.0000000;0.5764378
2002.0000000;-0.2599922
2003.0000000;-2.1490669
2004.0000000;-1.9018891
2005.0000000;-1.9115984
2006.0000000;-1.3901771
2007.0000000;-0.7473593
2008.0000000;-1.6301286
2009.0000000;-1.9436510
2010.0000000;-1.0189189
2011.0000000;-1.9131671
2012.0000000;-2.1117721
2013.0000000;-1.0287066
2014.0000000;-0.7561934
2015.0000000;-1.5527725