1967.0000000;-0.4905640
1968.0000000;0.1180261
1969.0000000;-0.5034043
1970.0000000;-0.6073769
1971.0000000;-1.3226757
1972.0000000;-0.4892935
1973.0000000;-1.0231390
1974.0000000;-0.8127726
1975.0000000;-0.5648918
1976.0000000;-1.3217500
1977.0000000;0.2549032
1978.0000000;0.4730805
1979.0000000;-0.0763535
1980.0000000;0.4450279
1981.0000000;0.3652083
1982.0000000;0.0755992
1983.0000000;-0.2876278
1984.0000000;0.6776875
1985.0000000;-0.1643633
1986.0000000;-1.2142233
1987.0000000;-0.2324780
1988.0000000;0.1550427
1989.0000000;-1.3648293
1990.0000000;-1.3775311
1991.0000000;-1.1018324
1992.0000000;-1.4396406
1993.0000000;-0.7001380
1994.0000000;-0.7911181
1995.0000000;0.5589943
1996.0000000;-0.2445153
1997.0000000;-0.8595457
1998.0000000;-1.6565456
1999.0000000;-0.9237103
2000.0000000;-1.1716685
2001.0000000;0.5859764
2002.0000000;-0.9121790
2003.0000000;-2.7029014
2004.0000000;-1.8684838
2005.0000000;-1.9886584
2006.0000000;-1.1754853
2007.0000000;-0.9266361
2008.0000000;-1.4193487
2009.0000000;-2.3228602
2010.0000000;-0.8614969
2011.0000000;-2.2638230
2012.0000000;-2.3955817
2013.0000000;-0.8090451
2014.0000000;-1.2670705
2015.0000000;-2.3790729