1967.0000000;-0.7013140
1968.0000000;0.3228823
1969.0000000;-0.0841457
1970.0000000;-0.5434317
1971.0000000;-0.4854637
1972.0000000;-0.0077929
1973.0000000;-1.1358465
1974.0000000;-0.7658892
1975.0000000;0.1186188
1976.0000000;-0.7452090
1977.0000000;0.5373697
1978.0000000;0.5617682
1979.0000000;-0.2034211
1980.0000000;0.2370214
1981.0000000;-0.0859698
1982.0000000;-0.1601114
1983.0000000;-0.2187642
1984.0000000;0.4163832
1985.0000000;-0.3919998
1986.0000000;-1.2156105
1987.0000000;-0.3199757
1988.0000000;0.0760333
1989.0000000;-1.4970860
1990.0000000;-0.8620708
1991.0000000;-0.6647853
1992.0000000;-0.6824334
1993.0000000;-0.4763838
1994.0000000;-0.1852187
1995.0000000;0.4127482
1996.0000000;0.0866916
1997.0000000;-0.1652712
1998.0000000;-1.3252716
1999.0000000;-0.4744393
2000.0000000;-0.7701583
2001.0000000;0.8475863
2002.0000000;-0.1466079
2003.0000000;-2.3788319
2004.0000000;-1.9510752
2005.0000000;-2.1188388
2006.0000000;-1.6184161
2007.0000000;-0.7569153
2008.0000000;-0.4886831
2009.0000000;-1.9556934
2010.0000000;-0.5028442
2011.0000000;-2.0687864
2012.0000000;-1.7132329
2013.0000000;-0.4718919
2014.0000000;-0.6965302
2015.0000000;-1.7119522