1967.0000000;-0.9896485
1968.0000000;0.2568214
1969.0000000;-0.3159286
1970.0000000;-0.7149514
1971.0000000;-0.9851145
1972.0000000;-0.2429705
1973.0000000;-1.3348982
1974.0000000;-1.3285398
1975.0000000;0.0756312
1976.0000000;-1.4209108
1977.0000000;0.6647488
1978.0000000;0.6796648
1979.0000000;-0.3885918
1980.0000000;0.4771220
1981.0000000;-0.0638042
1982.0000000;-0.1236982
1983.0000000;-0.3871072
1984.0000000;0.5989634
1985.0000000;-0.6464183
1986.0000000;-1.3527541
1987.0000000;-0.4113199
1988.0000000;0.1036845
1989.0000000;-1.6852776
1990.0000000;-1.6106749
1991.0000000;-0.9516906
1992.0000000;-0.8443964
1993.0000000;-0.6698008
1994.0000000;-0.2972454
1995.0000000;0.4294576
1996.0000000;-0.4126004
1997.0000000;-0.4989315
1998.0000000;-1.7112565
1999.0000000;-0.7400195
2000.0000000;-0.9684519
2001.0000000;0.5484891
2002.0000000;-1.1692818
2003.0000000;-2.6378536
2004.0000000;-2.1989613
2005.0000000;-2.3642626
2006.0000000;-1.9916960
2007.0000000;-1.7841263
2008.0000000;-1.2848920
2009.0000000;-2.4585977
2010.0000000;-1.0181916
2011.0000000;-2.5368705
2012.0000000;-2.1362784
2013.0000000;-0.8636103
2014.0000000;-1.1909596
2015.0000000;-2.3776512