1967.0000000;-0.7094827
1968.0000000;0.0817152
1969.0000000;-0.2273994
1970.0000000;-0.6387416
1971.0000000;-0.7101612
1972.0000000;-0.2185292
1973.0000000;-1.4814241
1974.0000000;-1.0245748
1975.0000000;-0.0039630
1976.0000000;-1.1982744
1977.0000000;0.5685425
1978.0000000;0.5602697
1979.0000000;-0.1630255
1980.0000000;0.4094016
1981.0000000;0.0444251
1982.0000000;-0.2109379
1983.0000000;-0.2917793
1984.0000000;0.2104653
1985.0000000;-0.3965671
1986.0000000;-1.2415740
1987.0000000;-0.3218454
1988.0000000;-0.0775571
1989.0000000;-1.4626489
1990.0000000;-1.3855910
1991.0000000;-0.6965665
1992.0000000;-0.5622030
1993.0000000;-0.5673537
1994.0000000;-0.4464294
1995.0000000;0.3692164
1996.0000000;-0.1598544
1997.0000000;-0.8360441
1998.0000000;-1.4957091
1999.0000000;-0.7128519
2000.0000000;-0.9254878
2001.0000000;0.4204082
2002.0000000;-1.2983150
2003.0000000;-2.7626431
2004.0000000;-1.5710015
2005.0000000;-1.9802420
2006.0000000;-1.7630279
2007.0000000;-1.5495957
2008.0000000;-1.1302211
2009.0000000;-2.1732664
2010.0000000;-0.6532719
2011.0000000;-2.1852047
2012.0000000;-1.8294938
2013.0000000;-0.5739042
2014.0000000;-0.9488180
2015.0000000;-2.2257860