1967.0000000;-0.5800260
1968.0000000;0.2688280
1969.0000000;-0.1905086
1970.0000000;-0.3954479
1971.0000000;-0.5599483
1972.0000000;-0.1235845
1973.0000000;-1.1059958
1974.0000000;-0.6868326
1975.0000000;-0.0786294
1976.0000000;-0.8794467
1977.0000000;0.3000278
1978.0000000;0.5085037
1979.0000000;-0.2044126
1980.0000000;0.2552305
1981.0000000;-0.0306129
1982.0000000;-0.1635902
1983.0000000;-0.2764524
1984.0000000;0.3659140
1985.0000000;-0.3714472
1986.0000000;-1.1692989
1987.0000000;-0.2880620
1988.0000000;0.0246423
1989.0000000;-1.2814407
1990.0000000;-0.8801922
1991.0000000;-0.6799191
1992.0000000;-0.6084476
1993.0000000;-0.5310808
1994.0000000;-0.2581940
1995.0000000;0.3980681
1996.0000000;0.0637025
1997.0000000;-0.4868766
1998.0000000;-1.2307441
1999.0000000;-0.5669553
2000.0000000;-0.6803788
2001.0000000;0.7420254
2002.0000000;-0.2288500
2003.0000000;-2.3036828
2004.0000000;-1.7646910
2005.0000000;-1.9027476
2006.0000000;-1.5155454
2007.0000000;-0.7176151
2008.0000000;-0.5955276
2009.0000000;-2.0229447
2010.0000000;-0.4828225
2011.0000000;-2.1002321
2012.0000000;-1.8322544
2013.0000000;-0.4970272
2014.0000000;-0.8881030
2015.0000000;-2.2282462