1967.0000000;-0.5152756
1968.0000000;0.3175292
1969.0000000;-0.5379624
1970.0000000;-0.3893282
1971.0000000;-1.2695673
1972.0000000;-0.3902588
1973.0000000;-0.8101835
1974.0000000;-0.7958592
1975.0000000;-0.5531825
1976.0000000;-1.2172673
1977.0000000;0.0233829
1978.0000000;0.3941176
1979.0000000;-0.1492528
1980.0000000;0.3725427
1981.0000000;0.2935211
1982.0000000;-0.0193141
1983.0000000;-0.2276858
1984.0000000;1.3163080
1985.0000000;0.6640255
1986.0000000;-1.1051440
1987.0000000;-0.0775379
1988.0000000;0.4949198
1989.0000000;-1.2433622
1990.0000000;-1.5467455
1991.0000000;-1.3107984
1992.0000000;-1.6781015
1993.0000000;-0.6823118
1994.0000000;-0.5394146
1995.0000000;0.7826455
1996.0000000;-0.0405901
1997.0000000;-0.7796926
1998.0000000;-1.5616299
1999.0000000;-0.7204705
2000.0000000;-0.8948662
2001.0000000;0.8784172
2002.0000000;-0.5207241
2003.0000000;-2.3110361
2004.0000000;-1.8193338
2005.0000000;-1.9023809
2006.0000000;-1.1494908
2007.0000000;-0.7158463
2008.0000000;-1.3547413
2009.0000000;-2.0620499
2010.0000000;-0.8408599
2011.0000000;-2.2145972
2012.0000000;-2.2430177
2013.0000000;-1.1375318
2014.0000000;-1.2227035
2015.0000000;-2.2375178