1967.0000000;-0.5422837
1968.0000000;0.1243380
1969.0000000;-0.1344368
1970.0000000;-0.1839334
1971.0000000;-0.1371811
1972.0000000;-0.1857848
1973.0000000;-1.2639351
1974.0000000;-0.8353494
1975.0000000;-0.0907608
1976.0000000;-1.0347090
1977.0000000;0.3540694
1978.0000000;0.4691169
1979.0000000;-0.0872190
1980.0000000;0.2387514
1981.0000000;-0.0894263
1982.0000000;-0.2618928
1983.0000000;-0.1754865
1984.0000000;0.2350961
1985.0000000;0.0272098
1986.0000000;-1.0381287
1987.0000000;-0.0459043
1988.0000000;0.0960011
1989.0000000;-1.1639467
1990.0000000;-1.2194368
1991.0000000;-0.6393238
1992.0000000;-0.5443719
1993.0000000;-0.5362556
1994.0000000;-0.3121667
1995.0000000;0.4220914
1996.0000000;-0.2517024
1997.0000000;-0.7980707
1998.0000000;-1.1052793
1999.0000000;-0.3686306
2000.0000000;-0.7265229
2001.0000000;0.3653986
2002.0000000;-1.0707222
2003.0000000;-2.4857669
2004.0000000;-1.4617360
2005.0000000;-1.5542380
2006.0000000;-1.3198171
2007.0000000;-1.0336494
2008.0000000;-0.7814492
2009.0000000;-1.7142287
2010.0000000;-0.5382620
2011.0000000;-1.6607208
2012.0000000;-1.2415025
2013.0000000;-0.3311552
2014.0000000;-0.7752816
2015.0000000;-1.3989422