1967.0000000;-1.4067669
1968.0000000;-0.1221445
1969.0000000;-0.8923616
1970.0000000;-0.8049467
1971.0000000;-1.6731595
1972.0000000;-0.7004839
1973.0000000;-1.2179533
1974.0000000;-1.1419920
1975.0000000;-0.6329811
1976.0000000;-1.6133913
1977.0000000;-0.2047030
1978.0000000;0.3805036
1979.0000000;-0.4365588
1980.0000000;0.2186455
1981.0000000;0.0687299
1982.0000000;-0.0487343
1983.0000000;-0.3862676
1984.0000000;0.7811874
1985.0000000;0.1032857
1986.0000000;-1.3723485
1987.0000000;-0.4121140
1988.0000000;0.0509840
1989.0000000;-1.5364759
1990.0000000;-1.6854491
1991.0000000;-1.7501041
1992.0000000;-1.6596243
1993.0000000;-0.7118840
1994.0000000;-0.4182227
1995.0000000;0.7072579
1996.0000000;-0.4202321
1997.0000000;-0.9208536
1998.0000000;-1.7771976
1999.0000000;-0.8149289
2000.0000000;-1.0086054
2001.0000000;0.6462017
2002.0000000;-1.0716960
2003.0000000;-2.5270658
2004.0000000;-1.8937143
2005.0000000;-2.0794075
2006.0000000;-1.5726362
2007.0000000;-1.3499032
2008.0000000;-1.5254482
2009.0000000;-2.3388085
2010.0000000;-1.1912851
2011.0000000;-2.2024293
2012.0000000;-2.2358007
2013.0000000;-0.7516652
2014.0000000;-1.1021054
2015.0000000;-2.1000421