1967.0000000;-1.2314501
1968.0000000;0.4632367
1969.0000000;-0.3087962
1970.0000000;-0.7010430
1971.0000000;-0.9474887
1972.0000000;-0.0547489
1973.0000000;-1.0856171
1974.0000000;-0.9523627
1975.0000000;-0.0086093
1976.0000000;-1.2076759
1977.0000000;0.4313575
1978.0000000;0.4175840
1979.0000000;-0.6827893
1980.0000000;-0.0561210
1981.0000000;-0.4016426
1982.0000000;-0.6522326
1983.0000000;-0.4602264
1984.0000000;0.6758541
1985.0000000;-0.4279481
1986.0000000;-1.2654022
1987.0000000;-0.2955563
1988.0000000;-0.0905960
1989.0000000;-1.5183672
1990.0000000;-0.9624581
1991.0000000;-1.2095377
1992.0000000;-0.8366356
1993.0000000;-0.5772312
1994.0000000;-0.3277023
1995.0000000;0.2805454
1996.0000000;-0.2076930
1997.0000000;-0.3537053
1998.0000000;-1.5695977
1999.0000000;-0.6686795
2000.0000000;-0.8626238
2001.0000000;0.5284888
2002.0000000;-0.0760216
2003.0000000;-2.2618868
2004.0000000;-2.0161953
2005.0000000;-2.0399218
2006.0000000;-1.6608231
2007.0000000;-1.0885588
2008.0000000;-0.9228470
2009.0000000;-1.8436584
2010.0000000;-0.7288479
2011.0000000;-1.9639220
2012.0000000;-1.8274158
2013.0000000;-0.5823554
2014.0000000;-0.8467593
2015.0000000;-1.7545688