1967.0000000;-0.6531382
1968.0000000;0.1057248
1969.0000000;-0.1719692
1970.0000000;-0.6142164
1971.0000000;-0.6755571
1972.0000000;-0.1745632
1973.0000000;-1.3563166
1974.0000000;-0.8745704
1975.0000000;-0.1252104
1976.0000000;-1.0665023
1977.0000000;0.3580718
1978.0000000;0.4256372
1979.0000000;-0.2223093
1980.0000000;0.1656917
1981.0000000;-0.0754560
1982.0000000;-0.2335885
1983.0000000;-0.3674341
1984.0000000;0.1733065
1985.0000000;-0.5135377
1986.0000000;-1.2309022
1987.0000000;-0.2829751
1988.0000000;-0.0804903
1989.0000000;-1.0441273
1990.0000000;-0.6541419
1991.0000000;-0.5570034
1992.0000000;-0.2971181
1993.0000000;-0.5607648
1994.0000000;-0.1317227
1995.0000000;0.4581646
1996.0000000;0.0929989
1997.0000000;-0.1135215
1998.0000000;-1.1086301
1999.0000000;-0.3303453
2000.0000000;-0.4691490
2001.0000000;0.5451226
2002.0000000;-0.1623643
2003.0000000;-1.8429646
2004.0000000;-1.8190475
2005.0000000;-1.7641424
2006.0000000;-1.2111542
2007.0000000;-0.3828242
2008.0000000;-0.3114057
2009.0000000;-1.5753469
2010.0000000;-0.3257632
2011.0000000;-1.7292764
2012.0000000;-1.5235455
2013.0000000;-0.4708346
2014.0000000;-0.8086097
2015.0000000;-2.0378826