1967.0000000;-1.3157539
1968.0000000;0.3336912
1969.0000000;-0.4009268
1970.0000000;-0.4764893
1971.0000000;-1.3056154
1972.0000000;-0.4553895
1973.0000000;-0.9321004
1974.0000000;-0.8852139
1975.0000000;-0.5732570
1976.0000000;-1.3830036
1977.0000000;-0.0052535
1978.0000000;0.1685541
1979.0000000;-0.3791441
1980.0000000;0.0858568
1981.0000000;-0.1150861
1982.0000000;-0.1669389
1983.0000000;-0.2626010
1984.0000000;0.9047461
1985.0000000;0.5560157
1986.0000000;-1.1613245
1987.0000000;-0.2979363
1988.0000000;0.2800630
1989.0000000;-1.3235626
1990.0000000;-1.6809373
1991.0000000;-1.5184867
1992.0000000;-1.3888277
1993.0000000;-0.6934429
1994.0000000;-0.4345841
1995.0000000;0.5756065
1996.0000000;-0.1347911
1997.0000000;-0.7734959
1998.0000000;-1.6393503
1999.0000000;-0.7702130
2000.0000000;-0.9453653
2001.0000000;0.6754739
2002.0000000;-0.6068146
2003.0000000;-2.2087979
2004.0000000;-1.7558234
2005.0000000;-1.8371756
2006.0000000;-1.2046750
2007.0000000;-0.9798441
2008.0000000;-1.3862841
2009.0000000;-1.8457506
2010.0000000;-0.8630106
2011.0000000;-1.8343253
2012.0000000;-1.9053357
2013.0000000;-0.6005433
2014.0000000;-0.8489076
2015.0000000;-1.5494258