1967.0000000;-0.6317071
1968.0000000;0.5818882
1969.0000000;-0.5892993
1970.0000000;-0.4841478
1971.0000000;-1.4124815
1972.0000000;-0.4839226
1973.0000000;-0.8115906
1974.0000000;-0.9628977
1975.0000000;-0.6711960
1976.0000000;-1.3541791
1977.0000000;0.0819039
1978.0000000;0.3451393
1979.0000000;-0.2390547
1980.0000000;0.3845246
1981.0000000;0.2371092
1982.0000000;-0.0690633
1983.0000000;-0.2042024
1984.0000000;1.3114913
1985.0000000;0.8074135
1986.0000000;-1.1373513
1987.0000000;0.1633111
1988.0000000;0.3062120
1989.0000000;-1.2993813
1990.0000000;-1.8139402
1991.0000000;-1.4308405
1992.0000000;-1.8006431
1993.0000000;-0.7468827
1994.0000000;-0.6303847
1995.0000000;0.7321492
1996.0000000;-0.1422939
1997.0000000;-0.8697534
1998.0000000;-1.6514499
1999.0000000;-0.7591116
2000.0000000;-0.9773978
2001.0000000;0.8766586
2002.0000000;-0.7302947
2003.0000000;-2.3332202
2004.0000000;-1.9207529
2005.0000000;-1.9708707
2006.0000000;-1.1719646
2007.0000000;-1.0725616
2008.0000000;-1.5195369
2009.0000000;-2.0347075
2010.0000000;-1.1287608
2011.0000000;-2.2168086
2012.0000000;-2.3122818
2013.0000000;-1.1330936
2014.0000000;-1.3977978
2015.0000000;-2.2648182