1967.0000000;-0.8717444
1968.0000000;-0.3808465
1969.0000000;-0.8065833
1970.0000000;-0.5074010
1971.0000000;-1.4276539
1972.0000000;-0.5779130
1973.0000000;-1.2139988
1974.0000000;-0.7986787
1975.0000000;-0.3757196
1976.0000000;-1.3942381
1977.0000000;-0.2638965
1978.0000000;0.4488968
1979.0000000;-0.2442669
1980.0000000;0.3722913
1981.0000000;0.1543133
1982.0000000;0.0317514
1983.0000000;-0.2654248
1984.0000000;1.0693121
1985.0000000;0.6517309
1986.0000000;-1.2459584
1987.0000000;0.0806882
1988.0000000;0.1370612
1989.0000000;-1.3491957
1990.0000000;-1.4593279
1991.0000000;-1.4617150
1992.0000000;-1.5038559
1993.0000000;-0.6058358
1994.0000000;-0.3217236
1995.0000000;0.8159919
1996.0000000;-0.1138221
1997.0000000;-0.7975916
1998.0000000;-1.5617433
1999.0000000;-0.6662157
2000.0000000;-0.7332652
2001.0000000;0.7515174
2002.0000000;-0.5695912
2003.0000000;-2.3753107
2004.0000000;-1.7615771
2005.0000000;-1.9575337
2006.0000000;-1.3107483
2007.0000000;-0.9871378
2008.0000000;-1.2417464
2009.0000000;-2.1930776
2010.0000000;-0.7188937
2011.0000000;-2.0367482
2012.0000000;-2.0539312
2013.0000000;-0.6020816
2014.0000000;-0.9039327
2015.0000000;-1.8987483