1967.0000000;-0.6300640
1968.0000000;1.1586947
1969.0000000;-0.8514162
1970.0000000;-0.3723152
1971.0000000;-0.9729538
1972.0000000;-0.8874025
1973.0000000;-0.7860633
1974.0000000;-0.8253321
1975.0000000;-0.7461669
1976.0000000;-1.3052101
1977.0000000;0.1416509
1978.0000000;-0.0088509
1979.0000000;0.0802996
1980.0000000;0.1373893
1981.0000000;-0.5107890
1982.0000000;-0.0931252
1983.0000000;-0.0471194
1984.0000000;1.4417465
1985.0000000;1.4422395
1986.0000000;-1.1391790
1987.0000000;0.4458320
1988.0000000;-0.2845526
1989.0000000;-0.8853043
1990.0000000;-1.2331114
1991.0000000;-1.3068407
1992.0000000;-1.0715944
1993.0000000;-0.6225338
1994.0000000;-0.2904736
1995.0000000;0.6337845
1996.0000000;-0.1663776
1997.0000000;-0.6913862
1998.0000000;-1.8410119
1999.0000000;-0.2077347
2000.0000000;-0.7752559
2001.0000000;0.5708123
2002.0000000;-0.4439576
2003.0000000;-1.7839910
2004.0000000;-1.5491840
2005.0000000;-1.5327189
2006.0000000;-1.0164412
2007.0000000;-0.5036188
2008.0000000;-1.4373837
2009.0000000;-1.9140232
2010.0000000;-0.7586837
2011.0000000;-1.7554938
2012.0000000;-1.7512022
2013.0000000;-0.7764630
2014.0000000;-0.7219417
2015.0000000;-1.1073437