1967.0000000;-1.3251982
1968.0000000;0.2930437
1969.0000000;-0.4545788
1970.0000000;-0.9638033
1971.0000000;-0.4262006
1972.0000000;0.0768314
1973.0000000;-1.1419179
1974.0000000;-0.8190721
1975.0000000;-0.4900371
1976.0000000;-0.3782282
1977.0000000;0.4575992
1978.0000000;0.2727917
1979.0000000;-0.2808472
1980.0000000;-0.1224270
1981.0000000;-0.8968610
1982.0000000;-0.7390753
1983.0000000;-0.4375404
1984.0000000;-0.0135325
1985.0000000;-1.0544202
1986.0000000;-1.1992457
1987.0000000;-0.9139221
1988.0000000;-0.9411932
1989.0000000;-1.1667182
1990.0000000;-1.0292817
1991.0000000;-0.8062925
1992.0000000;-0.9433298
1993.0000000;-0.8616222
1994.0000000;-1.0184698
1995.0000000;0.2480137
1996.0000000;0.1468849
1997.0000000;-0.4426008
1998.0000000;-1.2478780
1999.0000000;-1.2641146
2000.0000000;-1.2366130
2001.0000000;0.5263832
2002.0000000;-0.7663845
2003.0000000;-2.3186016
2004.0000000;-1.3174007
2005.0000000;-1.7641711
2006.0000000;-1.5396326
2007.0000000;-1.4705927
2008.0000000;-0.5674251
2009.0000000;-1.2201052
2010.0000000;-0.4941332
2011.0000000;-1.4193962
2012.0000000;-1.3166513
2013.0000000;-0.5940576
2014.0000000;-0.1953812
2015.0000000;-1.5809307