1967.0000000;-1.6100492
1968.0000000;0.0508179
1969.0000000;-0.5777792
1970.0000000;-1.2540355
1971.0000000;-0.9288403
1972.0000000;-0.1820555
1973.0000000;-1.4607637
1974.0000000;-1.3780650
1975.0000000;-0.9753293
1976.0000000;-1.2651625
1977.0000000;0.8632638
1978.0000000;0.5034376
1979.0000000;-0.2503577
1980.0000000;-0.1271290
1981.0000000;-1.0326858
1982.0000000;-0.5603802
1983.0000000;-0.2629473
1984.0000000;0.0009582
1985.0000000;-1.0832174
1986.0000000;-1.3786809
1987.0000000;-0.8981087
1988.0000000;-0.5748710
1989.0000000;-1.6523190
1990.0000000;-1.1880481
1991.0000000;-1.0399325
1992.0000000;-0.8518552
1993.0000000;-0.8879634
1994.0000000;-0.5036395
1995.0000000;-0.2917969
1996.0000000;-0.1816595
1997.0000000;-0.5793338
1998.0000000;-1.6992892
1999.0000000;-1.3196288
2000.0000000;-1.5817199
2001.0000000;0.8934885
2002.0000000;-1.2403965
2003.0000000;-2.4048529
2004.0000000;-1.9525149
2005.0000000;-2.2957394
2006.0000000;-1.7722996
2007.0000000;-1.9063780
2008.0000000;-0.9939663
2009.0000000;-2.0945561
2010.0000000;-0.7730447
2011.0000000;-2.3806496
2012.0000000;-2.0012136
2013.0000000;-1.1527650
2014.0000000;-1.3607180
2015.0000000;-2.4921327