1967.0000000;-0.3673357
1968.0000000;-1.0088362
1969.0000000;-1.5121450
1970.0000000;-0.9807253
1971.0000000;-1.9903215
1972.0000000;-0.9728864
1973.0000000;-1.5587101
1974.0000000;-1.0955315
1975.0000000;-0.6227334
1976.0000000;-1.7441052
1977.0000000;0.2906539
1978.0000000;0.4751439
1979.0000000;-0.0289104
1980.0000000;0.8437071
1981.0000000;0.2790802
1982.0000000;-0.0999759
1983.0000000;-0.0805227
1984.0000000;0.8349714
1985.0000000;0.5676863
1986.0000000;-1.6645164
1987.0000000;0.2375091
1988.0000000;0.2486783
1989.0000000;-1.4151312
1990.0000000;-1.7348971
1991.0000000;-1.5002806
1992.0000000;-1.0407476
1993.0000000;-0.5851645
1994.0000000;-0.6632402
1995.0000000;1.0802579
1996.0000000;-0.3783115
1997.0000000;-0.7720997
1998.0000000;-1.8039632
1999.0000000;-0.5454705
2000.0000000;-1.1766195
2001.0000000;0.5848992
2002.0000000;-1.1858388
2003.0000000;-3.0912509
2004.0000000;-1.7235727
2005.0000000;-2.3457336
2006.0000000;-1.2944573
2007.0000000;-1.1866641
2008.0000000;-1.6325976
2009.0000000;-3.1957741
2010.0000000;-0.9353620
2011.0000000;-3.1376042
2012.0000000;-2.8162050
2013.0000000;-1.3853557
2014.0000000;-1.2793109
2015.0000000;-2.7850876