1967.0000000;-1.3629770
1968.0000000;-0.2703632
1969.0000000;-0.5271190
1970.0000000;-1.2873557
1971.0000000;-0.6673970
1972.0000000;-0.3364680
1973.0000000;-1.6569245
1974.0000000;-0.8758813
1975.0000000;-0.8501858
1976.0000000;-1.1585407
1977.0000000;0.6502298
1978.0000000;0.4851808
1979.0000000;0.1947767
1980.0000000;0.0281252
1981.0000000;-0.4687285
1982.0000000;-0.2858151
1983.0000000;-0.1672472
1984.0000000;0.1008378
1985.0000000;-0.4115242
1986.0000000;-1.2867246
1987.0000000;-1.0803552
1988.0000000;-0.2858433
1989.0000000;-1.5049481
1990.0000000;-1.1855075
1991.0000000;-0.6299778
1992.0000000;-0.7790731
1993.0000000;-0.7490989
1994.0000000;-0.6843141
1995.0000000;-0.0901397
1996.0000000;0.0700014
1997.0000000;-0.4915896
1998.0000000;-1.6836109
1999.0000000;-1.6054049
2000.0000000;-1.4952822
2001.0000000;0.7218660
2002.0000000;-1.3646177
2003.0000000;-2.9463024
2004.0000000;-1.7276994
2005.0000000;-2.2897143
2006.0000000;-1.7433791
2007.0000000;-1.7844586
2008.0000000;-1.0533586
2009.0000000;-1.8173047
2010.0000000;-0.3571374
2011.0000000;-1.9248261
2012.0000000;-1.6402156
2013.0000000;-0.4758267
2014.0000000;-0.5366327
2015.0000000;-1.7517500