1967.0000000;-1.3286500
1968.0000000;1.0544587
1969.0000000;-0.3964770
1970.0000000;-0.5547835
1971.0000000;-1.0471374
1972.0000000;0.2404868
1973.0000000;-0.9146944
1974.0000000;-0.7743632
1975.0000000;0.2805156
1976.0000000;-1.1329424
1977.0000000;0.4024569
1978.0000000;0.3236560
1979.0000000;-0.8034893
1980.0000000;-0.2216252
1981.0000000;-0.2416767
1982.0000000;-0.7098740
1983.0000000;-0.1947529
1984.0000000;1.0829352
1985.0000000;-0.3865672
1986.0000000;-1.3791943
1987.0000000;-0.3989874
1988.0000000;-0.0282250
1989.0000000;-1.6591003
1990.0000000;-0.6452758
1991.0000000;-1.1048265
1992.0000000;-0.8096119
1993.0000000;-0.4853332
1994.0000000;-0.1993344
1995.0000000;0.5734584
1996.0000000;-0.1633392
1997.0000000;-0.1062448
1998.0000000;-1.5370278
1999.0000000;-0.4087938
2000.0000000;-0.9385747
2001.0000000;0.6463072
2002.0000000;0.0832616
2003.0000000;-2.3547862
2004.0000000;-2.2346897
2005.0000000;-2.2945414
2006.0000000;-1.7787504
2007.0000000;-1.0208532
2008.0000000;-1.1044701
2009.0000000;-2.0556569
2010.0000000;-0.7702622
2011.0000000;-2.2058353
2012.0000000;-2.0230374
2013.0000000;-0.6006017
2014.0000000;-0.7928254
2015.0000000;-1.7551622