1967.0000000;-0.6795853
1968.0000000;0.6298172
1969.0000000;-0.7498598
1970.0000000;-0.4030325
1971.0000000;-0.8303264
1972.0000000;-0.6995461
1973.0000000;-0.9388492
1974.0000000;-1.2074766
1975.0000000;-0.9125950
1976.0000000;-1.5120227
1977.0000000;0.4093359
1978.0000000;0.1449203
1979.0000000;-0.0845666
1980.0000000;0.4985763
1981.0000000;0.0821474
1982.0000000;-0.4127936
1983.0000000;-0.0986024
1984.0000000;1.8150096
1985.0000000;1.2775197
1986.0000000;-1.4023163
1987.0000000;0.4005497
1988.0000000;0.0496174
1989.0000000;-1.2014906
1990.0000000;-1.8149736
1991.0000000;-1.4822431
1992.0000000;-1.3361542
1993.0000000;-0.6614056
1994.0000000;-0.1466929
1995.0000000;1.0382028
1996.0000000;0.0945873
1997.0000000;-0.7172291
1998.0000000;-1.7700109
1999.0000000;-0.4122342
2000.0000000;-1.0460097
2001.0000000;0.9001727
2002.0000000;-0.3970863
2003.0000000;-2.3666210
2004.0000000;-1.9627500
2005.0000000;-1.8764964
2006.0000000;-1.2112653
2007.0000000;-0.7256956
2008.0000000;-1.5726628
2009.0000000;-2.4608436
2010.0000000;-0.9752659
2011.0000000;-2.1633768
2012.0000000;-2.3165159
2013.0000000;-1.1745052
2014.0000000;-0.7182320
2015.0000000;-1.7780399