1967.0000000;-0.4338468
1968.0000000;-0.6458642
1969.0000000;-1.3383877
1970.0000000;-0.8356370
1971.0000000;-1.6302047
1972.0000000;-0.8966708
1973.0000000;-1.4707310
1974.0000000;-1.1468729
1975.0000000;-0.8529640
1976.0000000;-1.6598942
1977.0000000;0.4573254
1978.0000000;0.3717652
1979.0000000;0.0869712
1980.0000000;0.7596751
1981.0000000;0.2196072
1982.0000000;-0.0638168
1983.0000000;-0.0695616
1984.0000000;0.7051964
1985.0000000;0.3510514
1986.0000000;-1.6262299
1987.0000000;0.3815895
1988.0000000;0.2055943
1989.0000000;-1.3781998
1990.0000000;-1.7808685
1991.0000000;-1.3779845
1992.0000000;-1.2373497
1993.0000000;-0.5966029
1994.0000000;-0.8943188
1995.0000000;0.9882943
1996.0000000;-0.3186642
1997.0000000;-0.7469450
1998.0000000;-1.7206463
1999.0000000;-0.6420531
2000.0000000;-1.1666317
2001.0000000;0.7629856
2002.0000000;-1.3175973
2003.0000000;-2.9646797
2004.0000000;-1.5862560
2005.0000000;-2.3806994
2006.0000000;-0.9002976
2007.0000000;-1.2483884
2008.0000000;-1.4699409
2009.0000000;-3.1486037
2010.0000000;-0.8485109
2011.0000000;-3.1356030
2012.0000000;-2.6397803
2013.0000000;-0.9068115
2014.0000000;-1.1385846
2015.0000000;-2.7461679