1967.0000000;-0.6647521
1968.0000000;0.1039769
1969.0000000;-0.2773063
1970.0000000;-0.7768191
1971.0000000;-0.2030209
1972.0000000;-0.2303773
1973.0000000;-1.3782156
1974.0000000;-0.7089167
1975.0000000;-0.5531662
1976.0000000;-0.8970727
1977.0000000;0.5902408
1978.0000000;0.5207856
1979.0000000;0.3208298
1980.0000000;0.2845869
1981.0000000;-0.2779408
1982.0000000;-0.1800949
1983.0000000;-0.2297385
1984.0000000;0.0978375
1985.0000000;-0.3223488
1986.0000000;-1.3487687
1987.0000000;-0.8873989
1988.0000000;-0.2973267
1989.0000000;-1.3647321
1990.0000000;-1.2640874
1991.0000000;-0.6486224
1992.0000000;-0.6051730
1993.0000000;-0.6111108
1994.0000000;-0.4173037
1995.0000000;0.1489952
1996.0000000;0.0471882
1997.0000000;-0.6066890
1998.0000000;-1.6200709
1999.0000000;-0.9125110
2000.0000000;-0.9050671
2001.0000000;0.3378833
2002.0000000;-1.5005231
2003.0000000;-2.9698892
2004.0000000;-1.4087498
2005.0000000;-2.0494599
2006.0000000;-2.0248787
2007.0000000;-1.9724746
2008.0000000;-1.3387841
2009.0000000;-2.0850086
2010.0000000;-0.4828964
2011.0000000;-2.4055800
2012.0000000;-1.9375273
2013.0000000;-0.5163081
2014.0000000;-1.0820298
2015.0000000;-2.5185666