1967.0000000;-1.1837089
1968.0000000;0.3027571
1969.0000000;-0.3270628
1970.0000000;-0.5627786
1971.0000000;-1.2101458
1972.0000000;0.3044519
1973.0000000;-0.2093718
1974.0000000;-0.8166571
1975.0000000;-0.2172557
1976.0000000;-0.3861118
1977.0000000;0.3170412
1978.0000000;0.2038500
1979.0000000;-0.9878979
1980.0000000;-0.3841386
1981.0000000;-0.1538772
1982.0000000;-1.0818032
1983.0000000;-0.2917147
1984.0000000;0.8696199
1985.0000000;0.1415199
1986.0000000;-1.3185322
1987.0000000;-1.1532547
1988.0000000;-1.0448478
1989.0000000;-1.6201658
1990.0000000;-1.1355419
1991.0000000;-1.7305844
1992.0000000;-1.2920237
1993.0000000;-0.8426943
1994.0000000;-0.6050206
1995.0000000;0.3744483
1996.0000000;-0.8415030
1997.0000000;-0.8625807
1998.0000000;-1.7858377
1999.0000000;-0.6340943
2000.0000000;-0.8943162
2001.0000000;0.6718827
2002.0000000;0.3726611
2003.0000000;-2.1133060
2004.0000000;-1.9322106
2005.0000000;-1.7970755
2006.0000000;-1.3919895
2007.0000000;-1.0814142
2008.0000000;-0.6825048
2009.0000000;-1.6502326
2010.0000000;-0.4125646
2011.0000000;-1.7949200
2012.0000000;-1.8727560
2013.0000000;-1.1625829
2014.0000000;-1.0280390
2015.0000000;-0.8005362