1967.0000000;-0.6976205
1968.0000000;1.1416743
1969.0000000;-1.2744017
1970.0000000;-0.1017454
1971.0000000;-1.2096000
1972.0000000;-0.9779731
1973.0000000;-0.5699029
1974.0000000;-0.7357424
1975.0000000;-0.9269639
1976.0000000;-1.5058566
1977.0000000;0.2447643
1978.0000000;0.1214203
1979.0000000;0.1877016
1980.0000000;0.1804415
1981.0000000;-0.4068148
1982.0000000;-0.2689142
1983.0000000;0.1576368
1984.0000000;1.8918267
1985.0000000;1.3358793
1986.0000000;-1.2973050
1987.0000000;0.5899770
1988.0000000;-0.3707989
1989.0000000;-1.3088125
1990.0000000;-1.0507178
1991.0000000;-1.7356770
1992.0000000;-1.2304080
1993.0000000;-0.5968869
1994.0000000;-0.2197751
1995.0000000;0.9155685
1996.0000000;0.0992818
1997.0000000;-0.5489007
1998.0000000;-1.8794367
1999.0000000;-0.3169616
2000.0000000;-1.0094264
2001.0000000;0.8136957
2002.0000000;-0.2887009
2003.0000000;-2.2580683
2004.0000000;-2.0921092
2005.0000000;-1.9302292
2006.0000000;-1.3108026
2007.0000000;-0.7470057
2008.0000000;-1.5862087
2009.0000000;-2.6872005
2010.0000000;-1.4141643
2011.0000000;-2.4624562
2012.0000000;-2.6544333
2013.0000000;-1.4438243
2014.0000000;-1.3577766
2015.0000000;-2.4850731