1967.0000000;-1.2499111
1968.0000000;0.1356564
1969.0000000;-0.3010398
1970.0000000;-1.0188149
1971.0000000;-0.7416722
1972.0000000;-0.2160587
1973.0000000;-1.3306077
1974.0000000;-1.0230815
1975.0000000;-0.8146958
1976.0000000;-0.9247696
1977.0000000;0.7060437
1978.0000000;0.4928671
1979.0000000;-0.0522608
1980.0000000;-0.1004148
1981.0000000;-0.8553604
1982.0000000;-0.3291919
1983.0000000;-0.2020135
1984.0000000;-0.0059056
1985.0000000;-0.8031805
1986.0000000;-1.3486366
1987.0000000;-0.7280166
1988.0000000;-0.5747920
1989.0000000;-1.6131693
1990.0000000;-0.8883816
1991.0000000;-0.8490348
1992.0000000;-0.8318841
1993.0000000;-0.6814441
1994.0000000;-0.5417796
1995.0000000;-0.1778131
1996.0000000;0.0654287
1997.0000000;-0.4401400
1998.0000000;-1.4988489
1999.0000000;-1.0131183
2000.0000000;-1.3808788
2001.0000000;0.9715002
2002.0000000;-0.8547391
2003.0000000;-2.2284632
2004.0000000;-1.7159469
2005.0000000;-2.1343770
2006.0000000;-1.5558457
2007.0000000;-1.4111257
2008.0000000;-0.7261852
2009.0000000;-1.8196108
2010.0000000;-0.6116368
2011.0000000;-2.1303968
2012.0000000;-1.7380502
2013.0000000;-0.8899440
2014.0000000;-1.0847530
2015.0000000;-2.1676426