1967.0000000;-0.6766688
1968.0000000;0.4046817
1969.0000000;-0.5410094
1970.0000000;-0.7996339
1971.0000000;-0.2970067
1972.0000000;-0.1610045
1973.0000000;-1.7948284
1974.0000000;-1.0594313
1975.0000000;-0.6545604
1976.0000000;-1.0169284
1977.0000000;0.8172742
1978.0000000;0.5920255
1979.0000000;0.2316441
1980.0000000;0.3066773
1981.0000000;-0.3922234
1982.0000000;-0.2601009
1983.0000000;-0.1582351
1984.0000000;0.1610744
1985.0000000;-0.8409555
1986.0000000;-1.3506613
1987.0000000;-0.9020391
1988.0000000;-0.3174946
1989.0000000;-1.5809311
1990.0000000;-1.3897631
1991.0000000;-0.8238036
1992.0000000;-0.9343240
1993.0000000;-0.6902238
1994.0000000;-0.2196686
1995.0000000;0.2105415
1996.0000000;0.0435618
1997.0000000;-0.3813437
1998.0000000;-1.7313738
1999.0000000;-1.0525851
2000.0000000;-1.0573227
2001.0000000;0.7027370
2002.0000000;-1.3439972
2003.0000000;-2.8178849
2004.0000000;-1.8045492
2005.0000000;-2.2539482
2006.0000000;-2.0844245
2007.0000000;-2.0495698
2008.0000000;-1.0785644
2009.0000000;-2.2636418
2010.0000000;-0.7393322
2011.0000000;-2.6658373
2012.0000000;-2.1125884
2013.0000000;-0.7777997
2014.0000000;-1.1160269
2015.0000000;-2.3750815