1967.0000000;-1.0158725
1968.0000000;0.2321135
1969.0000000;-0.3878989
1970.0000000;-0.8002495
1971.0000000;-1.0330436
1972.0000000;-0.0894852
1973.0000000;-1.4442071
1974.0000000;-0.9996663
1975.0000000;0.1313619
1976.0000000;-1.0074224
1977.0000000;0.4777398
1978.0000000;0.5632200
1979.0000000;-0.4299743
1980.0000000;0.3003513
1981.0000000;-0.0843692
1982.0000000;-0.2420917
1983.0000000;-0.4244684
1984.0000000;0.4702733
1985.0000000;-0.5024170
1986.0000000;-1.3498718
1987.0000000;-0.5264529
1988.0000000;0.0536966
1989.0000000;-1.5242900
1990.0000000;-1.2992703
1991.0000000;-0.9557093
1992.0000000;-0.7303634
1993.0000000;-0.6521435
1994.0000000;-0.4671157
1995.0000000;0.4254416
1996.0000000;-0.3826456
1997.0000000;-0.8032535
1998.0000000;-1.6779759
1999.0000000;-0.7130913
2000.0000000;-0.9878068
2001.0000000;0.7413298
2002.0000000;-0.7954781
2003.0000000;-2.7559221
2004.0000000;-2.1151657
2005.0000000;-2.1916699
2006.0000000;-2.0428243
2007.0000000;-1.4311843
2008.0000000;-1.0333486
2009.0000000;-2.3461142
2010.0000000;-0.7672613
2011.0000000;-2.3486919
2012.0000000;-1.9339416
2013.0000000;-0.5488594
2014.0000000;-0.8071665
2015.0000000;-2.0926070