1967.0000000;-1.2166789
1968.0000000;0.1419103
1969.0000000;-0.3075374
1970.0000000;-0.9024614
1971.0000000;-0.6184959
1972.0000000;-0.1772933
1973.0000000;-1.2755923
1974.0000000;-0.9391569
1975.0000000;-0.8143048
1976.0000000;-0.9630743
1977.0000000;0.6591250
1978.0000000;0.4604915
1979.0000000;0.1011218
1980.0000000;-0.0453754
1981.0000000;-0.7034713
1982.0000000;-0.3142091
1983.0000000;-0.2030660
1984.0000000;0.1223921
1985.0000000;-0.6144171
1986.0000000;-1.2224338
1987.0000000;-0.6443959
1988.0000000;-0.2797071
1989.0000000;-1.5715827
1990.0000000;-1.0148093
1991.0000000;-0.8756246
1992.0000000;-0.7961311
1993.0000000;-0.7653384
1994.0000000;-0.5812008
1995.0000000;-0.0167591
1996.0000000;0.0426232
1997.0000000;-0.5375230
1998.0000000;-1.5072026
1999.0000000;-0.9939988
2000.0000000;-1.4075732
2001.0000000;0.8170128
2002.0000000;-0.9222720
2003.0000000;-2.3030677
2004.0000000;-1.8746152
2005.0000000;-2.1504645
2006.0000000;-1.5471553
2007.0000000;-1.5318741
2008.0000000;-0.7611778
2009.0000000;-1.7364883
2010.0000000;-0.5746061
2011.0000000;-2.0105131
2012.0000000;-1.7181425
2013.0000000;-0.7026137
2014.0000000;-0.9915031
2015.0000000;-2.1064510