1967.0000000;-0.7604065
1968.0000000;0.2335203
1969.0000000;-0.4079871
1970.0000000;-0.6021674
1971.0000000;-0.8534801
1972.0000000;-0.0525136
1973.0000000;-1.4283299
1974.0000000;-0.8336658
1975.0000000;0.0293093
1976.0000000;-1.0075815
1977.0000000;0.4137275
1978.0000000;0.5544829
1979.0000000;-0.3548687
1980.0000000;0.2911222
1981.0000000;-0.0246855
1982.0000000;-0.1913018
1983.0000000;-0.3273811
1984.0000000;0.5374634
1985.0000000;-0.5082906
1986.0000000;-1.3282001
1987.0000000;-0.4519340
1988.0000000;0.0544579
1989.0000000;-1.4235845
1990.0000000;-1.0890279
1991.0000000;-0.7932082
1992.0000000;-0.6763399
1993.0000000;-0.6113270
1994.0000000;-0.3376952
1995.0000000;0.5305898
1996.0000000;-0.2172546
1997.0000000;-0.5368593
1998.0000000;-1.5206623
1999.0000000;-0.6518050
2000.0000000;-0.8567658
2001.0000000;0.7449639
2002.0000000;-0.6735413
2003.0000000;-2.5946288
2004.0000000;-2.0338342
2005.0000000;-2.1390567
2006.0000000;-1.9233902
2007.0000000;-1.1564212
2008.0000000;-0.9751671
2009.0000000;-2.3530426
2010.0000000;-0.6163074
2011.0000000;-2.4276237
2012.0000000;-2.0464573
2013.0000000;-0.5664760
2014.0000000;-0.8409748
2015.0000000;-2.3776097