1967.0000000;-0.3884815
1968.0000000;1.1315693
1969.0000000;-1.0319400
1970.0000000;-0.1953422
1971.0000000;-0.8561863
1972.0000000;-0.7168683
1973.0000000;-0.3080025
1974.0000000;-0.7187469
1975.0000000;-0.6192683
1976.0000000;-1.5281675
1977.0000000;0.3482854
1978.0000000;0.2249477
1979.0000000;0.3391807
1980.0000000;0.3707675
1981.0000000;-0.1465207
1982.0000000;-0.2093998
1983.0000000;-0.0720542
1984.0000000;1.9546385
1985.0000000;1.3637762
1986.0000000;-1.2759676
1987.0000000;0.5598547
1988.0000000;-0.0157726
1989.0000000;-1.2413679
1990.0000000;-1.1123043
1991.0000000;-1.6418338
1992.0000000;-0.9647833
1993.0000000;-0.5672607
1994.0000000;0.0266329
1995.0000000;0.9418072
1996.0000000;0.1726381
1997.0000000;-0.6781324
1998.0000000;-1.8557541
1999.0000000;-0.2619736
2000.0000000;-0.9158597
2001.0000000;0.9410406
2002.0000000;-0.0911119
2003.0000000;-2.2824311
2004.0000000;-2.0405054
2005.0000000;-1.9167153
2006.0000000;-1.2924168
2007.0000000;-0.7007586
2008.0000000;-1.5036908
2009.0000000;-2.9806674
2010.0000000;-1.6189530
2011.0000000;-2.8270488
2012.0000000;-2.9466672
2013.0000000;-1.8247128
2014.0000000;-1.8329476
2015.0000000;-3.1372776