1967.0000000;-0.2986561
1968.0000000;-0.2890203
1969.0000000;-1.3423440
1970.0000000;-0.6086995
1971.0000000;-1.8287816
1972.0000000;-0.6074612
1973.0000000;-1.1365323
1974.0000000;-0.7316471
1975.0000000;-0.4784212
1976.0000000;-1.7506676
1977.0000000;0.1411123
1978.0000000;0.5789887
1979.0000000;0.3050963
1980.0000000;0.9027852
1981.0000000;0.3893189
1982.0000000;0.0710303
1983.0000000;0.0037373
1984.0000000;0.4679300
1985.0000000;0.0116344
1986.0000000;-1.6933234
1987.0000000;0.1151685
1988.0000000;0.0878461
1989.0000000;-2.0418668
1990.0000000;-1.7940044
1991.0000000;-1.3438283
1992.0000000;-1.3359833
1993.0000000;-0.6983298
1994.0000000;-1.1073272
1995.0000000;0.7437598
1996.0000000;-0.5059991
1997.0000000;-0.8436375
1998.0000000;-1.5759823
1999.0000000;-0.7810817
2000.0000000;-1.1100855
2001.0000000;0.4266736
2002.0000000;-1.2227845
2003.0000000;-3.2234619
2004.0000000;-0.8247105
2005.0000000;-2.0441368
2006.0000000;-1.2857100
2007.0000000;-0.6952461
2008.0000000;-1.6120050
2009.0000000;-3.1553583
2010.0000000;-0.5788200
2011.0000000;-2.8020976
2012.0000000;-2.2672246
2013.0000000;-0.5410784
2014.0000000;-0.8956898
2015.0000000;-2.3588347