1967.0000000;-0.4711321
1968.0000000;-0.3350520
1969.0000000;-0.7569864
1970.0000000;-0.7316700
1971.0000000;-1.2956648
1972.0000000;-0.5802865
1973.0000000;-1.1440327
1974.0000000;-0.8531107
1975.0000000;-0.4657300
1976.0000000;-1.3995708
1977.0000000;0.6380389
1978.0000000;0.6780565
1979.0000000;0.0912278
1980.0000000;0.6536167
1981.0000000;0.2236647
1982.0000000;0.0280127
1983.0000000;-0.0864981
1984.0000000;0.4372804
1985.0000000;-0.2386082
1986.0000000;-1.5006721
1987.0000000;0.1194448
1988.0000000;0.0230801
1989.0000000;-1.8117838
1990.0000000;-1.6024903
1991.0000000;-0.6946500
1992.0000000;-1.0927374
1993.0000000;-0.5910839
1994.0000000;-0.3865935
1995.0000000;0.7977403
1996.0000000;-0.0923355
1997.0000000;-0.6982770
1998.0000000;-1.5214429
1999.0000000;-0.9107082
2000.0000000;-1.1466681
2001.0000000;0.3708852
2002.0000000;-1.4958377
2003.0000000;-3.4084496
2004.0000000;-2.0364251
2005.0000000;-2.3147418
2006.0000000;-1.9403002
2007.0000000;-1.3490160
2008.0000000;-1.7385541
2009.0000000;-3.0668447
2010.0000000;-0.5381659
2011.0000000;-2.6809428
2012.0000000;-2.3876767
2013.0000000;-0.6199564
2014.0000000;-0.7558948
2015.0000000;-2.2610612