1967.0000000;-0.4091243
1968.0000000;0.8438483
1969.0000000;-0.6007960
1970.0000000;-0.3062127
1971.0000000;-0.5561913
1972.0000000;-0.5561756
1973.0000000;-0.7516170
1974.0000000;-0.9070400
1975.0000000;-0.6421344
1976.0000000;-1.2608482
1977.0000000;0.3983638
1978.0000000;0.2233619
1979.0000000;0.0319332
1980.0000000;0.6398565
1981.0000000;0.0342713
1982.0000000;-0.2173861
1983.0000000;0.0035746
1984.0000000;1.9008090
1985.0000000;1.4469658
1986.0000000;-1.3226075
1987.0000000;0.7802211
1988.0000000;0.4177848
1989.0000000;-0.6065410
1990.0000000;-1.7307775
1991.0000000;-1.2002213
1992.0000000;-1.3030171
1993.0000000;-0.6269395
1994.0000000;-0.1188207
1995.0000000;1.1376290
1996.0000000;0.1851647
1997.0000000;-0.5080851
1998.0000000;-1.7002673
1999.0000000;-0.2959160
2000.0000000;-0.6061783
2001.0000000;0.9511200
2002.0000000;-0.2286208
2003.0000000;-2.2441564
2004.0000000;-1.8962476
2005.0000000;-1.8958800
2006.0000000;-1.0052834
2007.0000000;-0.4844100
2008.0000000;-1.4629350
2009.0000000;-2.4352465
2010.0000000;-0.7977957
2011.0000000;-2.2029712
2012.0000000;-2.4206874
2013.0000000;-0.8593001
2014.0000000;-1.0060331
2015.0000000;-2.0542336