1967.0000000;-1.3569517
1968.0000000;-0.8054916
1969.0000000;-1.4858310
1970.0000000;-1.2771645
1971.0000000;-1.6979040
1972.0000000;-0.4358916
1973.0000000;-1.8520224
1974.0000000;-1.1574843
1975.0000000;-1.0419096
1976.0000000;-1.4901328
1977.0000000;-0.3599181
1978.0000000;-0.2788113
1979.0000000;-1.1907059
1980.0000000;-0.4031817
1981.0000000;-1.0307693
1982.0000000;-1.5511503
1983.0000000;-0.5823594
1984.0000000;0.3468455
1985.0000000;-0.8188286
1986.0000000;-1.6166804
1987.0000000;-1.0111305
1988.0000000;-0.6911188
1989.0000000;-1.3220804
1990.0000000;-0.8733383
1991.0000000;-1.2967917
1992.0000000;-0.9589949
1993.0000000;-0.8377306
1994.0000000;-0.6970003
1995.0000000;0.1994200
1996.0000000;-0.2328596
1997.0000000;-0.5147839
1998.0000000;-1.5338109
1999.0000000;-0.5820050
2000.0000000;-1.0118803
2001.0000000;0.2012013
2002.0000000;-0.3458734
2003.0000000;-2.3099921
2004.0000000;-1.9961277
2005.0000000;-1.9552385
2006.0000000;-1.6403754
2007.0000000;-1.1396381
2008.0000000;-1.2439437
2009.0000000;-2.2351084
2010.0000000;-0.5906104
2011.0000000;-2.3629618
2012.0000000;-2.1674082
2013.0000000;-0.8554486
2014.0000000;-1.1277745
2015.0000000;-2.4865105