1967.0000000;-0.8709592
1968.0000000;-0.2857230
1969.0000000;-0.7673188
1970.0000000;-0.4448801
1971.0000000;-1.4651338
1972.0000000;-0.5802830
1973.0000000;-0.8892270
1974.0000000;-0.7747999
1975.0000000;-0.4498005
1976.0000000;-1.4174640
1977.0000000;-0.1666242
1978.0000000;0.3993770
1979.0000000;-0.2371477
1980.0000000;0.3258621
1981.0000000;0.1254193
1982.0000000;0.0222536
1983.0000000;-0.2467786
1984.0000000;1.1612914
1985.0000000;0.4821667
1986.0000000;-1.2971390
1987.0000000;-0.1139545
1988.0000000;0.1644368
1989.0000000;-1.4018565
1990.0000000;-1.3929148
1991.0000000;-1.5690510
1992.0000000;-1.4883003
1993.0000000;-0.6109566
1994.0000000;-0.3667752
1995.0000000;0.8078401
1996.0000000;-0.0641289
1997.0000000;-0.7519011
1998.0000000;-1.5985801
1999.0000000;-0.7130828
2000.0000000;-0.8105696
2001.0000000;0.6133972
2002.0000000;-0.5514044
2003.0000000;-2.3233120
2004.0000000;-1.8489337
2005.0000000;-1.9601390
2006.0000000;-1.4772438
2007.0000000;-1.0790889
2008.0000000;-1.3742577
2009.0000000;-2.2165632
2010.0000000;-0.7234764
2011.0000000;-2.1633251
2012.0000000;-2.1707644
2013.0000000;-0.7081341
2014.0000000;-0.9050714
2015.0000000;-1.9978251