1967.0000000;-0.3064931
1968.0000000;0.7250990
1969.0000000;-0.7984047
1970.0000000;-0.4093468
1971.0000000;-0.5589852
1972.0000000;-0.5342177
1973.0000000;-0.8583621
1974.0000000;-0.9948336
1975.0000000;-0.5644842
1976.0000000;-1.2627337
1977.0000000;0.3207353
1978.0000000;0.1732073
1979.0000000;-0.2045634
1980.0000000;0.5200163
1981.0000000;0.1113744
1982.0000000;-0.2860970
1983.0000000;-0.0485510
1984.0000000;1.7814074
1985.0000000;1.2029017
1986.0000000;-1.3696773
1987.0000000;0.4933167
1988.0000000;0.4354208
1989.0000000;-0.9241571
1990.0000000;-1.7537644
1991.0000000;-1.2920206
1992.0000000;-1.1850297
1993.0000000;-0.6379038
1994.0000000;-0.1806283
1995.0000000;1.0847006
1996.0000000;0.2184701
1997.0000000;-0.6172498
1998.0000000;-1.6128163
1999.0000000;-0.3950190
2000.0000000;-0.8357903
2001.0000000;0.9377511
2002.0000000;-0.1531016
2003.0000000;-2.3012424
2004.0000000;-1.8548844
2005.0000000;-1.7805912
2006.0000000;-1.0215101
2007.0000000;-0.2591305
2008.0000000;-1.3451473
2009.0000000;-2.3247283
2010.0000000;-0.5816777
2011.0000000;-1.9894977
2012.0000000;-2.1791420
2013.0000000;-0.7752906
2014.0000000;-0.8011856
2015.0000000;-1.3806736