1967.0000000;-0.6467759
1968.0000000;0.1827303
1969.0000000;-0.4059957
1970.0000000;-0.7605121
1971.0000000;-0.3424762
1972.0000000;-0.1386874
1973.0000000;-1.3945203
1974.0000000;-0.6967797
1975.0000000;-0.5577497
1976.0000000;-0.9025448
1977.0000000;0.4958608
1978.0000000;0.4346535
1979.0000000;0.2320445
1980.0000000;0.1973092
1981.0000000;-0.3436286
1982.0000000;-0.2636117
1983.0000000;-0.1893370
1984.0000000;0.0930577
1985.0000000;-0.3358507
1986.0000000;-1.3298599
1987.0000000;-0.8898014
1988.0000000;-0.3324742
1989.0000000;-1.2404841
1990.0000000;-1.0613098
1991.0000000;-0.6805336
1992.0000000;-0.6699324
1993.0000000;-0.6414837
1994.0000000;-0.4539413
1995.0000000;0.1472792
1996.0000000;0.0524514
1997.0000000;-0.6097801
1998.0000000;-1.6051511
1999.0000000;-0.9119695
2000.0000000;-0.9072980
2001.0000000;0.2312017
2002.0000000;-1.3570426
2003.0000000;-2.9152565
2004.0000000;-1.4159806
2005.0000000;-2.0286243
2006.0000000;-1.9007503
2007.0000000;-1.6012722
2008.0000000;-0.9941097
2009.0000000;-1.8268620
2010.0000000;-0.4290720
2011.0000000;-2.0491452
2012.0000000;-1.6646805
2013.0000000;-0.3611699
2014.0000000;-0.5751358
2015.0000000;-1.6956594