1967.0000000;-1.5765316
1968.0000000;0.0521987
1969.0000000;-1.0171666
1970.0000000;-0.7577478
1971.0000000;-1.8362951
1972.0000000;-0.7459754
1973.0000000;-1.2288010
1974.0000000;-1.2604082
1975.0000000;-0.6107669
1976.0000000;-1.6779249
1977.0000000;-0.2626414
1978.0000000;0.3952565
1979.0000000;-0.6162320
1980.0000000;0.2270713
1981.0000000;-0.0186782
1982.0000000;-0.1215022
1983.0000000;-0.2394368
1984.0000000;0.9846426
1985.0000000;0.5435423
1986.0000000;-1.3675767
1987.0000000;-0.0820071
1988.0000000;0.2859758
1989.0000000;-1.5083764
1990.0000000;-1.7727529
1991.0000000;-1.8005635
1992.0000000;-1.6605291
1993.0000000;-0.8069476
1994.0000000;-0.4972861
1995.0000000;0.7629872
1996.0000000;-0.6895777
1997.0000000;-0.9499776
1998.0000000;-1.9076777
1999.0000000;-0.7667549
2000.0000000;-1.0685911
2001.0000000;0.7010741
2002.0000000;-1.4230031
2003.0000000;-2.6786251
2004.0000000;-2.0769005
2005.0000000;-2.2962086
2006.0000000;-1.7397013
2007.0000000;-1.6757324
2008.0000000;-1.6883996
2009.0000000;-2.5218029
2010.0000000;-1.5369761
2011.0000000;-2.5228200
2012.0000000;-2.5995498
2013.0000000;-1.0090550
2014.0000000;-1.2840326
2015.0000000;-2.4535217