1967.0000000;-1.2621551
1968.0000000;0.0864352
1969.0000000;-0.3592770
1970.0000000;-0.5074890
1971.0000000;-1.2329898
1972.0000000;0.2677147
1973.0000000;-0.5056826
1974.0000000;-0.9602047
1975.0000000;-0.2410956
1976.0000000;-0.6049380
1977.0000000;0.2671766
1978.0000000;0.1933929
1979.0000000;-1.1337923
1980.0000000;-0.4490984
1981.0000000;-0.4359728
1982.0000000;-1.1493907
1983.0000000;-0.2616518
1984.0000000;0.7982051
1985.0000000;0.1434985
1986.0000000;-1.3134112
1987.0000000;-1.3101956
1988.0000000;-1.1043022
1989.0000000;-1.6139889
1990.0000000;-1.2966948
1991.0000000;-1.7872651
1992.0000000;-1.3744677
1993.0000000;-0.8443664
1994.0000000;-0.4597192
1995.0000000;0.2694810
1996.0000000;-1.2403626
1997.0000000;-1.0067971
1998.0000000;-1.8880352
1999.0000000;-0.7350077
2000.0000000;-1.0008986
2001.0000000;0.5790867
2002.0000000;0.2917166
2003.0000000;-2.1657290
2004.0000000;-1.9767845
2005.0000000;-1.7967783
2006.0000000;-1.4194355
2007.0000000;-1.1491029
2008.0000000;-0.8909075
2009.0000000;-1.6123686
2010.0000000;-0.5074836
2011.0000000;-1.5820093
2012.0000000;-1.8894006
2013.0000000;-1.1424935
2014.0000000;-1.0318332
2015.0000000;-0.6910546