1967.0000000;-0.1947606
1968.0000000;0.5737844
1969.0000000;-0.9695438
1970.0000000;-0.4834397
1971.0000000;-0.9997994
1972.0000000;-0.6403297
1973.0000000;-1.1511898
1974.0000000;-0.9006707
1975.0000000;-0.3389270
1976.0000000;-1.3080065
1977.0000000;0.4654003
1978.0000000;0.4032114
1979.0000000;0.0299518
1980.0000000;0.6863741
1981.0000000;0.1315514
1982.0000000;-0.1426528
1983.0000000;0.0355056
1984.0000000;1.5053139
1985.0000000;1.2924185
1986.0000000;-1.4846897
1987.0000000;0.8232542
1988.0000000;0.6343913
1989.0000000;-0.7165766
1990.0000000;-1.8718176
1991.0000000;-1.1231110
1992.0000000;-1.2161164
1993.0000000;-0.5585277
1994.0000000;0.0392856
1995.0000000;1.1025819
1996.0000000;0.0573754
1997.0000000;-0.7204326
1998.0000000;-1.7164779
1999.0000000;-0.3797400
2000.0000000;-0.8521073
2001.0000000;0.9471181
2002.0000000;-0.3918579
2003.0000000;-2.5157814
2004.0000000;-1.7412422
2005.0000000;-1.8907697
2006.0000000;-1.0686800
2007.0000000;-0.2814403
2008.0000000;-1.2085332
2009.0000000;-2.5298882
2010.0000000;-0.7459319
2011.0000000;-2.1786809
2012.0000000;-2.3076258
2013.0000000;-0.5404185
2014.0000000;-0.8808682
2015.0000000;-1.9162796