1967.0000000;-1.1160977
1968.0000000;-0.0566007
1969.0000000;-0.0665508
1970.0000000;-0.8814944
1971.0000000;-0.8999789
1972.0000000;-0.1544873
1973.0000000;-0.9949269
1974.0000000;-0.9949148
1975.0000000;-0.1605224
1976.0000000;-0.5665215
1977.0000000;0.4835761
1978.0000000;0.4755885
1979.0000000;-0.6523212
1980.0000000;0.3542942
1981.0000000;-0.1024422
1982.0000000;-0.4630191
1983.0000000;-0.5458966
1984.0000000;0.5312042
1985.0000000;0.0847865
1986.0000000;-1.2582679
1987.0000000;-0.5991553
1988.0000000;-0.5997220
1989.0000000;-1.4889258
1990.0000000;-1.5575943
1991.0000000;-1.5582627
1992.0000000;-1.6376514
1993.0000000;-0.6877207
1994.0000000;-0.4975526
1995.0000000;0.3565430
1996.0000000;-0.2740621
1997.0000000;-0.9265803
1998.0000000;-1.7038003
1999.0000000;-0.7952552
2000.0000000;-1.1818635
2001.0000000;0.6717235
2002.0000000;-0.2453636
2003.0000000;-2.3018360
2004.0000000;-1.7807686
2005.0000000;-1.7990824
2006.0000000;-1.4482658
2007.0000000;-1.1559995
2008.0000000;-1.0316039
2009.0000000;-1.6336795
2010.0000000;-0.9803876
2011.0000000;-1.8456590
2012.0000000;-1.9298352
2013.0000000;-0.9666888
2014.0000000;-1.2675850
2015.0000000;-1.8071901