1967.0000000;-1.2560935
1968.0000000;0.4074043
1969.0000000;-0.7390642
1970.0000000;-0.4876929
1971.0000000;-1.3795316
1972.0000000;-0.5433537
1973.0000000;-0.7927543
1974.0000000;-0.8553680
1975.0000000;-0.5881503
1976.0000000;-1.3571035
1977.0000000;-0.1567018
1978.0000000;0.2268156
1979.0000000;0.0183270
1980.0000000;0.1004313
1981.0000000;-0.1214551
1982.0000000;0.1010544
1983.0000000;-0.1496211
1984.0000000;1.2984526
1985.0000000;0.9104130
1986.0000000;-1.2057137
1987.0000000;0.2006006
1988.0000000;0.3804284
1989.0000000;-1.3613739
1990.0000000;-1.6342788
1991.0000000;-1.7804923
1992.0000000;-1.4904788
1993.0000000;-0.6728978
1994.0000000;-0.3909934
1995.0000000;0.6835071
1996.0000000;-0.0634690
1997.0000000;-0.7416000
1998.0000000;-1.6981875
1999.0000000;-0.6278930
2000.0000000;-0.7768307
2001.0000000;0.7417556
2002.0000000;-0.2310608
2003.0000000;-2.1186447
2004.0000000;-1.8957005
2005.0000000;-1.9519191
2006.0000000;-1.2726916
2007.0000000;-0.8078729
2008.0000000;-1.5084515
2009.0000000;-1.9698770
2010.0000000;-0.8979142
2011.0000000;-1.9853386
2012.0000000;-2.1378779
2013.0000000;-0.7726736
2014.0000000;-0.9623390
2015.0000000;-1.7855508