1967.0000000;-1.1955793
1968.0000000;0.5430048
1969.0000000;-0.3124444
1970.0000000;-0.6194936
1971.0000000;-0.9699264
1972.0000000;0.1956243
1973.0000000;-0.9575658
1974.0000000;-0.7678657
1975.0000000;0.0868107
1976.0000000;-0.9900482
1977.0000000;0.3043810
1978.0000000;0.2928463
1979.0000000;-0.6555445
1980.0000000;-0.2237326
1981.0000000;-0.3512541
1982.0000000;-0.6382401
1983.0000000;-0.3497781
1984.0000000;0.7169330
1985.0000000;-0.3749837
1986.0000000;-1.2318425
1987.0000000;-0.4004916
1988.0000000;-0.1291521
1989.0000000;-1.4830292
1990.0000000;-0.7076404
1991.0000000;-1.1682487
1992.0000000;-0.7136289
1993.0000000;-0.5389935
1994.0000000;-0.4280998
1995.0000000;0.3278238
1996.0000000;0.0075894
1997.0000000;-0.2907819
1998.0000000;-1.4458091
1999.0000000;-0.6056345
2000.0000000;-0.8652445
2001.0000000;0.5535637
2002.0000000;0.1445951
2003.0000000;-2.1915231
2004.0000000;-1.9928665
2005.0000000;-2.0061984
2006.0000000;-1.6370250
2007.0000000;-0.8421105
2008.0000000;-0.7907040
2009.0000000;-1.8202379
2010.0000000;-0.5647552
2011.0000000;-1.9291258
2012.0000000;-1.7856481
2013.0000000;-0.5510139
2014.0000000;-0.7847323
2015.0000000;-1.6888100