1967.0000000;-0.3477287
1968.0000000;-0.8389305
1969.0000000;-0.9922870
1970.0000000;-0.6815620
1971.0000000;-1.7242215
1972.0000000;-0.6273757
1973.0000000;-1.2247237
1974.0000000;-0.9587082
1975.0000000;-0.3720163
1976.0000000;-1.4474978
1977.0000000;0.1952739
1978.0000000;0.8293349
1979.0000000;0.0202703
1980.0000000;0.7332175
1981.0000000;0.4168829
1982.0000000;0.0778117
1983.0000000;-0.0652096
1984.0000000;0.5832306
1985.0000000;-0.5923380
1986.0000000;-1.8016210
1987.0000000;0.1875741
1988.0000000;0.1488044
1989.0000000;-1.9068021
1990.0000000;-1.7298098
1991.0000000;-0.8043081
1992.0000000;-1.0317314
1993.0000000;-0.6134926
1994.0000000;-0.5101001
1995.0000000;1.0196949
1996.0000000;-0.3147861
1997.0000000;-0.8844585
1998.0000000;-1.4940017
1999.0000000;-0.9540161
2000.0000000;-1.3873162
2001.0000000;0.0648686
2002.0000000;-2.0208406
2003.0000000;-3.8350732
2004.0000000;-2.1772680
2005.0000000;-2.5969291
2006.0000000;-2.1583700
2007.0000000;-1.5783074
2008.0000000;-1.9994061
2009.0000000;-3.3972080
2010.0000000;-0.7132130
2011.0000000;-3.0297594
2012.0000000;-2.6311772
2013.0000000;-0.8021939
2014.0000000;-0.8444092
2015.0000000;-2.5521679