1967.0000000;-0.3414123
1968.0000000;-0.8653148
1969.0000000;-1.1434619
1970.0000000;-1.0510113
1971.0000000;-1.7019606
1972.0000000;-0.7724952
1973.0000000;-1.4758028
1974.0000000;-0.9327691
1975.0000000;-0.6640382
1976.0000000;-1.4809597
1977.0000000;0.3857635
1978.0000000;0.3651934
1979.0000000;0.1397991
1980.0000000;0.7395616
1981.0000000;0.1788040
1982.0000000;0.0042051
1983.0000000;-0.0851415
1984.0000000;0.6413890
1985.0000000;-0.0868855
1986.0000000;-1.5707572
1987.0000000;0.1687828
1988.0000000;0.2849537
1989.0000000;-1.4766345
1990.0000000;-1.6533036
1991.0000000;-1.1608996
1992.0000000;-1.0062227
1993.0000000;-0.5378797
1994.0000000;-0.7015838
1995.0000000;0.9852692
1996.0000000;-0.3142269
1997.0000000;-0.8812494
1998.0000000;-1.6084009
1999.0000000;-0.6345169
2000.0000000;-1.4102470
2001.0000000;0.7119209
2002.0000000;-1.3719497
2003.0000000;-3.0768943
2004.0000000;-1.2774913
2005.0000000;-2.5133226
2006.0000000;-0.7866709
2007.0000000;-1.2036810
2008.0000000;-1.4404242
2009.0000000;-3.1598115
2010.0000000;-0.7424392
2011.0000000;-3.2497187
2012.0000000;-2.5258102
2013.0000000;-1.0268536
2014.0000000;-1.1699064
2015.0000000;-3.0302970