1967.0000000;-1.4871353
1968.0000000;0.1526722
1969.0000000;-0.3245999
1970.0000000;-0.6667084
1971.0000000;-1.2109501
1972.0000000;0.2795040
1973.0000000;-0.3060540
1974.0000000;-0.9783276
1975.0000000;-0.3253909
1976.0000000;-0.3666855
1977.0000000;0.4148330
1978.0000000;0.1020210
1979.0000000;-0.9726957
1980.0000000;-0.5113196
1981.0000000;-0.1677449
1982.0000000;-1.3051727
1983.0000000;-0.3004570
1984.0000000;0.6437145
1985.0000000;0.0003227
1986.0000000;-1.3529841
1987.0000000;-1.1326764
1988.0000000;-1.1905843
1989.0000000;-1.6061842
1990.0000000;-1.1274867
1991.0000000;-1.7053164
1992.0000000;-1.3604572
1993.0000000;-0.7757208
1994.0000000;-0.6383124
1995.0000000;0.1528186
1996.0000000;-0.7957049
1997.0000000;-0.9675297
1998.0000000;-1.8035929
1999.0000000;-0.5980114
2000.0000000;-0.7671340
2001.0000000;0.5870471
2002.0000000;0.3580740
2003.0000000;-2.0884049
2004.0000000;-1.8872063
2005.0000000;-1.7592010
2006.0000000;-1.4241843
2007.0000000;-1.1518397
2008.0000000;-0.5932226
2009.0000000;-1.5886829
2010.0000000;-0.4681406
2011.0000000;-1.6936036
2012.0000000;-1.7689310
2013.0000000;-1.0369978
2014.0000000;-1.0505540
2015.0000000;-0.7650930