1967.0000000;-0.7683822
1968.0000000;0.1196664
1969.0000000;-0.2896352
1970.0000000;-0.3501024
1971.0000000;-0.9462382
1972.0000000;-0.4232296
1973.0000000;-0.7275974
1974.0000000;-0.6036658
1975.0000000;-0.3109190
1976.0000000;-1.0639517
1977.0000000;-0.0491903
1978.0000000;0.3399660
1979.0000000;-0.1254012
1980.0000000;0.2401711
1981.0000000;0.0586766
1982.0000000;-0.0254339
1983.0000000;-0.2797540
1984.0000000;0.9770243
1985.0000000;0.5178043
1986.0000000;-1.0972946
1987.0000000;-0.1333191
1988.0000000;0.5102719
1989.0000000;-1.2485151
1990.0000000;-1.2795181
1991.0000000;-1.3410848
1992.0000000;-1.2354505
1993.0000000;-0.5705066
1994.0000000;-0.3165202
1995.0000000;0.6444913
1996.0000000;0.0442137
1997.0000000;-0.6949520
1998.0000000;-1.4264817
1999.0000000;-0.6948255
2000.0000000;-0.7654717
2001.0000000;0.8051878
2002.0000000;-0.2599270
2003.0000000;-2.1586545
2004.0000000;-1.6255912
2005.0000000;-1.7177231
2006.0000000;-1.0789185
2007.0000000;-0.6598169
2008.0000000;-1.0134244
2009.0000000;-1.8982947
2010.0000000;-0.4857430
2011.0000000;-1.7177207
2012.0000000;-1.8261929
2013.0000000;-0.5498456
2014.0000000;-0.8538026
2015.0000000;-1.5130054