1967.0000000;-0.5582329
1968.0000000;-0.7504634
1969.0000000;-1.1519892
1970.0000000;-0.7045271
1971.0000000;-1.6842937
1972.0000000;-0.5372747
1973.0000000;-1.3448384
1974.0000000;-0.7982866
1975.0000000;-0.5929577
1976.0000000;-1.4878845
1977.0000000;0.4600311
1978.0000000;0.6311620
1979.0000000;0.1852000
1980.0000000;0.5403004
1981.0000000;0.2467575
1982.0000000;0.0720057
1983.0000000;-0.1634833
1984.0000000;0.3221287
1985.0000000;-0.3800169
1986.0000000;-1.6709223
1987.0000000;0.1643625
1988.0000000;-0.0357043
1989.0000000;-1.8720450
1990.0000000;-1.6768427
1991.0000000;-0.7382786
1992.0000000;-1.0780821
1993.0000000;-0.6189029
1994.0000000;-0.3836031
1995.0000000;0.4532783
1996.0000000;-0.3333640
1997.0000000;-1.1996233
1998.0000000;-1.7893839
1999.0000000;-1.3484085
2000.0000000;-2.0532346
2001.0000000;-0.1177944
2002.0000000;-1.8592767
2003.0000000;-3.8859026
2004.0000000;-1.9489604
2005.0000000;-2.1501942
2006.0000000;-1.8738335
2007.0000000;-0.9655123
2008.0000000;-0.9712740
2009.0000000;-2.8171360
2010.0000000;-0.2654171
2011.0000000;-2.0546746
2012.0000000;-1.5705643
2013.0000000;0.0080840
2014.0000000;-0.3753489
2015.0000000;-1.8027790