1967.0000000;-1.3378251
1968.0000000;-0.4239457
1969.0000000;-0.2712223
1970.0000000;-1.3719521
1971.0000000;-1.3288985
1972.0000000;-0.4956236
1973.0000000;-1.6947377
1974.0000000;-1.2108085
1975.0000000;0.0168158
1976.0000000;-1.0126393
1977.0000000;0.5378927
1978.0000000;0.5317548
1979.0000000;-0.7479720
1980.0000000;0.3738739
1981.0000000;-0.0083924
1982.0000000;-0.4006856
1983.0000000;-0.7200599
1984.0000000;0.5769047
1985.0000000;-0.3502789
1986.0000000;-1.4510742
1987.0000000;-1.1466125
1988.0000000;-0.6604605
1989.0000000;-1.6655232
1990.0000000;-1.8499835
1991.0000000;-1.7970893
1992.0000000;-1.8979325
1993.0000000;-0.8414376
1994.0000000;-0.6455791
1995.0000000;0.4449727
1996.0000000;-0.5266394
1997.0000000;-0.9968146
1998.0000000;-2.0345168
1999.0000000;-0.9703063
2000.0000000;-1.4668603
2001.0000000;0.7503577
2002.0000000;-0.4805997
2003.0000000;-2.6330018
2004.0000000;-2.0259993
2005.0000000;-2.0603931
2006.0000000;-1.7313578
2007.0000000;-1.4246693
2008.0000000;-1.2205513
2009.0000000;-1.8543122
2010.0000000;-1.2643945
2011.0000000;-2.0166059
2012.0000000;-2.1399369
2013.0000000;-1.2409449
2014.0000000;-1.2076943
2015.0000000;-1.9067123