1967.0000000;-0.4691127
1968.0000000;-0.4460596
1969.0000000;-0.9371713
1970.0000000;-0.7926480
1971.0000000;-1.4961774
1972.0000000;-0.6100015
1973.0000000;-1.2915733
1974.0000000;-0.9662528
1975.0000000;-0.4956729
1976.0000000;-1.4600646
1977.0000000;0.6083043
1978.0000000;0.7139200
1979.0000000;0.0871296
1980.0000000;0.6570108
1981.0000000;0.2321981
1982.0000000;0.0442004
1983.0000000;-0.0680989
1984.0000000;0.4956405
1985.0000000;-0.3313388
1986.0000000;-1.6753067
1987.0000000;0.1900999
1988.0000000;0.0971257
1989.0000000;-1.8825257
1990.0000000;-1.6720223
1991.0000000;-0.7404325
1992.0000000;-1.1621107
1993.0000000;-0.6028950
1994.0000000;-0.3773861
1995.0000000;0.8522218
1996.0000000;-0.1583816
1997.0000000;-0.7512470
1998.0000000;-1.5741017
1999.0000000;-0.9783006
2000.0000000;-1.4116825
2001.0000000;0.4437548
2002.0000000;-1.6591332
2003.0000000;-3.6033711
2004.0000000;-2.1403131
2005.0000000;-2.4788890
2006.0000000;-2.0791259
2007.0000000;-1.4447975
2008.0000000;-1.7960570
2009.0000000;-3.2325628
2010.0000000;-0.6366684
2011.0000000;-2.8646619
2012.0000000;-2.4840922
2013.0000000;-0.6243496
2014.0000000;-0.7668180
2015.0000000;-2.4806013