1967.0000000;-1.1685642
1968.0000000;0.3074562
1969.0000000;-0.2889599
1970.0000000;-0.8089119
1971.0000000;-1.1312391
1972.0000000;0.0321496
1973.0000000;-0.6639113
1974.0000000;-0.8774997
1975.0000000;-0.0428872
1976.0000000;-0.2905889
1977.0000000;0.4001221
1978.0000000;0.3543049
1979.0000000;-0.7746726
1980.0000000;-0.1484664
1981.0000000;-0.0439825
1982.0000000;-0.7338898
1983.0000000;-0.5691025
1984.0000000;0.8455395
1985.0000000;0.1616252
1986.0000000;-1.3108783
1987.0000000;-0.9052615
1988.0000000;-0.8242337
1989.0000000;-1.5854461
1990.0000000;-1.4215181
1991.0000000;-1.7818005
1992.0000000;-1.5915210
1993.0000000;-0.7790762
1994.0000000;-0.5939014
1995.0000000;0.4585182
1996.0000000;-0.6259514
1997.0000000;-0.8752906
1998.0000000;-1.8350651
1999.0000000;-0.7456951
2000.0000000;-0.8700599
2001.0000000;0.6822226
2002.0000000;0.1982270
2003.0000000;-2.1333544
2004.0000000;-1.9114909
2005.0000000;-1.8590019
2006.0000000;-1.3940797
2007.0000000;-1.1810715
2008.0000000;-0.8473307
2009.0000000;-1.7049930
2010.0000000;-0.7841763
2011.0000000;-1.8947774
2012.0000000;-1.9703209
2013.0000000;-1.2543607
2014.0000000;-1.1599585
2015.0000000;-1.1591308