1967.0000000;-0.6141134
1968.0000000;0.1322890
1969.0000000;-0.2815705
1970.0000000;-0.6879249
1971.0000000;-0.3146330
1972.0000000;-0.1304990
1973.0000000;-1.2026975
1974.0000000;-0.6355768
1975.0000000;-0.5125257
1976.0000000;-0.7995721
1977.0000000;0.5394918
1978.0000000;0.4652497
1979.0000000;0.2939651
1980.0000000;0.2198874
1981.0000000;-0.2970322
1982.0000000;-0.1569896
1983.0000000;-0.2490345
1984.0000000;0.0979214
1985.0000000;-0.3605189
1986.0000000;-1.3076550
1987.0000000;-0.8506378
1988.0000000;-0.3254983
1989.0000000;-1.1922419
1990.0000000;-0.9661059
1991.0000000;-0.6012608
1992.0000000;-0.5705375
1993.0000000;-0.5725886
1994.0000000;-0.3905545
1995.0000000;0.1933633
1996.0000000;0.0829930
1997.0000000;-0.3859155
1998.0000000;-1.4087826
1999.0000000;-0.8665948
2000.0000000;-0.7723094
2001.0000000;0.3788776
2002.0000000;-1.0265737
2003.0000000;-2.6262567
2004.0000000;-1.1487849
2005.0000000;-1.8813424
2006.0000000;-1.6812536
2007.0000000;-1.3206098
2008.0000000;-0.9658664
2009.0000000;-1.7253420
2010.0000000;-0.3316506
2011.0000000;-2.0339119
2012.0000000;-1.6746922
2013.0000000;-0.3246598
2014.0000000;-0.5970392
2015.0000000;-1.9283252