1967.0000000;-0.7707154
1968.0000000;-0.4685685
1969.0000000;-0.2022685
1970.0000000;-1.0137237
1971.0000000;-0.8302551
1972.0000000;-0.3792641
1973.0000000;-1.4419003
1974.0000000;-0.5766468
1975.0000000;-0.0176856
1976.0000000;-0.8355186
1977.0000000;0.3974288
1978.0000000;0.5248449
1979.0000000;-0.2954270
1980.0000000;0.4219590
1981.0000000;0.4118997
1982.0000000;-0.1751663
1983.0000000;-0.3347135
1984.0000000;0.1576041
1985.0000000;-0.3943418
1986.0000000;-1.4603660
1987.0000000;-0.6756457
1988.0000000;-0.2658254
1989.0000000;-1.3345354
1990.0000000;-1.3867633
1991.0000000;-1.0646133
1992.0000000;-1.1596067
1993.0000000;-0.5874611
1994.0000000;-0.5899223
1995.0000000;0.5099424
1996.0000000;-0.1873524
1997.0000000;-0.8416069
1998.0000000;-1.6582242
1999.0000000;-0.9029706
2000.0000000;-1.0748043
2001.0000000;0.4077493
2002.0000000;-0.4993001
2003.0000000;-2.7472622
2004.0000000;-1.4756970
2005.0000000;-1.9157828
2006.0000000;-1.3987846
2007.0000000;-0.8579176
2008.0000000;-1.0060910
2009.0000000;-2.0690875
2010.0000000;-0.7242141
2011.0000000;-2.5217199
2012.0000000;-2.3412430
2013.0000000;-1.0590701
2014.0000000;-1.2702219
2015.0000000;-2.6046305