1967.0000000;-0.1683108
1968.0000000;-0.5509502
1969.0000000;-0.8069184
1970.0000000;-0.6710725
1971.0000000;-1.3928798
1972.0000000;-0.6283225
1973.0000000;-1.1756036
1974.0000000;-0.7242712
1975.0000000;-0.4385867
1976.0000000;-1.2510021
1977.0000000;0.2425735
1978.0000000;0.4309893
1979.0000000;0.0626934
1980.0000000;0.7118373
1981.0000000;0.2571049
1982.0000000;-0.0340509
1983.0000000;-0.1021066
1984.0000000;0.8166385
1985.0000000;0.3568570
1986.0000000;-1.4031055
1987.0000000;0.1930000
1988.0000000;0.4305378
1989.0000000;-1.0930500
1990.0000000;-1.3457067
1991.0000000;-1.1016347
1992.0000000;-0.6478372
1993.0000000;-0.5103517
1994.0000000;-0.6385639
1995.0000000;0.9676815
1996.0000000;-0.2265081
1997.0000000;-0.8116602
1998.0000000;-1.5494730
1999.0000000;-0.5887638
2000.0000000;-1.3322871
2001.0000000;0.5338543
2002.0000000;-1.0290176
2003.0000000;-3.0726724
2004.0000000;-1.2895014
2005.0000000;-2.3180337
2006.0000000;-1.0255834
2007.0000000;-0.8067475
2008.0000000;-1.4452599
2009.0000000;-3.0055737
2010.0000000;-0.6987269
2011.0000000;-3.0525236
2012.0000000;-2.5713706
2013.0000000;-1.3295488
2014.0000000;-1.1404327
2015.0000000;-2.9145210