1967.0000000;-1.5784957
1968.0000000;0.2646236
1969.0000000;-1.1271887
1970.0000000;-0.6742002
1971.0000000;-1.7025795
1972.0000000;-0.6617496
1973.0000000;-0.9668967
1974.0000000;-0.9704350
1975.0000000;-0.7190416
1976.0000000;-1.4998472
1977.0000000;-0.1129494
1978.0000000;0.2475480
1979.0000000;-0.1441415
1980.0000000;0.0132602
1981.0000000;-0.1118404
1982.0000000;0.1201532
1983.0000000;-0.0910784
1984.0000000;1.3914917
1985.0000000;1.0234647
1986.0000000;-1.3228452
1987.0000000;0.1953025
1988.0000000;0.5154977
1989.0000000;-1.5101767
1990.0000000;-1.8479899
1991.0000000;-1.9788702
1992.0000000;-1.5985298
1993.0000000;-0.6903999
1994.0000000;-0.4596717
1995.0000000;0.7748498
1996.0000000;-0.2726440
1997.0000000;-0.8115647
1998.0000000;-1.8559873
1999.0000000;-0.7074664
2000.0000000;-0.9921798
2001.0000000;0.9099976
2002.0000000;-0.6393708
2003.0000000;-2.4107771
2004.0000000;-2.0964265
2005.0000000;-2.2356095
2006.0000000;-1.5700105
2007.0000000;-1.0169623
2008.0000000;-1.6923401
2009.0000000;-2.2006440
2010.0000000;-1.3214481
2011.0000000;-2.2329907
2012.0000000;-2.4125102
2013.0000000;-0.8034132
2014.0000000;-1.0007236
2015.0000000;-1.9467230