1967.0000000;-1.5036521
1968.0000000;0.0602526
1969.0000000;-0.3278169
1970.0000000;-0.7205780
1971.0000000;-1.2442298
1972.0000000;0.0067988
1973.0000000;-0.4972154
1974.0000000;-1.0525644
1975.0000000;-0.4397899
1976.0000000;-0.4335052
1977.0000000;0.4662630
1978.0000000;0.2278810
1979.0000000;-1.0167429
1980.0000000;-0.4289305
1981.0000000;-0.1943350
1982.0000000;-1.2379806
1983.0000000;-0.3659021
1984.0000000;0.5806440
1985.0000000;-0.0705333
1986.0000000;-1.3376298
1987.0000000;-1.1069853
1988.0000000;-1.2320020
1989.0000000;-1.6091504
1990.0000000;-1.2386484
1991.0000000;-1.7456690
1992.0000000;-1.4654197
1993.0000000;-0.7829125
1994.0000000;-0.6572303
1995.0000000;0.1114297
1996.0000000;-0.8150955
1997.0000000;-0.9708995
1998.0000000;-1.8448728
1999.0000000;-0.7579156
2000.0000000;-0.8658921
2001.0000000;0.6033111
2002.0000000;0.2820267
2003.0000000;-2.1159573
2004.0000000;-1.9062915
2005.0000000;-1.7752173
2006.0000000;-1.4773551
2007.0000000;-1.2698854
2008.0000000;-0.8857940
2009.0000000;-1.6268492
2010.0000000;-0.8301269
2011.0000000;-1.7883646
2012.0000000;-1.8803369
2013.0000000;-1.1211133
2014.0000000;-1.1907325
2015.0000000;-1.1302757