1967.0000000;-0.3106915
1968.0000000;-0.1889438
1969.0000000;-0.8903224
1970.0000000;-0.7269113
1971.0000000;-1.5060604
1972.0000000;-0.6899275
1973.0000000;-0.8542303
1974.0000000;-0.8413505
1975.0000000;-0.5192852
1976.0000000;-1.5960591
1977.0000000;0.2263736
1978.0000000;0.4697996
1979.0000000;0.2157326
1980.0000000;0.8475933
1981.0000000;0.3896019
1982.0000000;0.1658086
1983.0000000;0.0051364
1984.0000000;0.6087621
1985.0000000;0.2051117
1986.0000000;-1.4680505
1987.0000000;0.1205897
1988.0000000;0.2186214
1989.0000000;-1.6658266
1990.0000000;-1.6572680
1991.0000000;-1.3213226
1992.0000000;-1.3031669
1993.0000000;-0.6267071
1994.0000000;-0.6579316
1995.0000000;0.7565631
1996.0000000;-0.3158624
1997.0000000;-0.7993078
1998.0000000;-1.5076945
1999.0000000;-0.4780374
2000.0000000;-1.0893531
2001.0000000;0.3403473
2002.0000000;-1.2606860
2003.0000000;-3.1111004
2004.0000000;-1.0260332
2005.0000000;-1.9880669
2006.0000000;-1.4120530
2007.0000000;-0.7400214
2008.0000000;-1.6701188
2009.0000000;-2.9607966
2010.0000000;-0.7501587
2011.0000000;-2.7143312
2012.0000000;-2.2447810
2013.0000000;-0.6526726
2014.0000000;-1.0984533
2015.0000000;-2.5745659