1967.0000000;-1.2429492
1968.0000000;-0.2194648
1969.0000000;-0.1696701
1970.0000000;-0.9981971
1971.0000000;-1.1614714
1972.0000000;-0.2395679
1973.0000000;-1.1148272
1974.0000000;-1.1047654
1975.0000000;-0.0960537
1976.0000000;-0.6911054
1977.0000000;0.5903943
1978.0000000;0.4379339
1979.0000000;-0.9284471
1980.0000000;0.2313919
1981.0000000;-0.0703734
1982.0000000;-0.5453971
1983.0000000;-0.3760465
1984.0000000;0.7157167
1985.0000000;0.0785191
1986.0000000;-1.3510308
1987.0000000;-0.8691944
1988.0000000;-0.6825953
1989.0000000;-1.6119989
1990.0000000;-1.5598254
1991.0000000;-1.6935496
1992.0000000;-1.7029762
1993.0000000;-0.8679575
1994.0000000;-0.5049864
1995.0000000;0.3870409
1996.0000000;-0.2786836
1997.0000000;-0.8450885
1998.0000000;-1.7972548
1999.0000000;-0.8384536
2000.0000000;-1.2717957
2001.0000000;0.7467635
2002.0000000;-0.2357769
2003.0000000;-2.3300512
2004.0000000;-1.9575098
2005.0000000;-1.8914058
2006.0000000;-1.6020418
2007.0000000;-1.3609649
2008.0000000;-1.2870933
2009.0000000;-1.7395921
2010.0000000;-1.2497748
2011.0000000;-2.0192156
2012.0000000;-2.1162858
2013.0000000;-1.2361166
2014.0000000;-1.3033423
2015.0000000;-1.9576520