1967.0000000;-1.2108881
1968.0000000;-0.0967472
1969.0000000;-0.9801649
1970.0000000;-0.6468635
1971.0000000;-1.7194951
1972.0000000;-0.6889634
1973.0000000;-1.0144349
1974.0000000;-1.0501492
1975.0000000;-0.6422924
1976.0000000;-1.6198286
1977.0000000;-0.2008921
1978.0000000;0.3809096
1979.0000000;-0.3939952
1980.0000000;0.3198010
1981.0000000;0.0884794
1982.0000000;-0.0107602
1983.0000000;-0.2876665
1984.0000000;1.0190020
1985.0000000;0.3066936
1986.0000000;-1.3459256
1987.0000000;-0.3004301
1988.0000000;0.1085040
1989.0000000;-1.4966938
1990.0000000;-1.6057053
1991.0000000;-1.7689389
1992.0000000;-1.6526303
1993.0000000;-0.6970164
1994.0000000;-0.4344588
1995.0000000;0.7907242
1996.0000000;-0.3177056
1997.0000000;-0.8716904
1998.0000000;-1.7574461
1999.0000000;-0.7898660
2000.0000000;-0.9190500
2001.0000000;0.6453671
2002.0000000;-1.0543611
2003.0000000;-2.4577127
2004.0000000;-1.9890707
2005.0000000;-2.1402562
2006.0000000;-1.6146536
2007.0000000;-1.3404930
2008.0000000;-1.5584893
2009.0000000;-2.2886667
2010.0000000;-1.1010847
2011.0000000;-2.2772930
2012.0000000;-2.3274276
2013.0000000;-0.7527306
2014.0000000;-1.0193713
2015.0000000;-2.0940235