1967.0000000;-0.6116635
1968.0000000;0.5451524
1969.0000000;-0.4695804
1970.0000000;-0.4982817
1971.0000000;-1.2968313
1972.0000000;-0.5051951
1973.0000000;-0.8149375
1974.0000000;-0.9507051
1975.0000000;-0.5927376
1976.0000000;-1.3503623
1977.0000000;0.2115787
1978.0000000;0.3963088
1979.0000000;-0.1251426
1980.0000000;0.5134747
1981.0000000;0.2713702
1982.0000000;0.0626911
1983.0000000;-0.2228608
1984.0000000;1.0851891
1985.0000000;0.5475688
1986.0000000;-1.0820941
1987.0000000;-0.0442068
1988.0000000;0.1698241
1989.0000000;-1.3827708
1990.0000000;-1.7645105
1991.0000000;-1.2589167
1992.0000000;-1.6947960
1993.0000000;-0.6528944
1994.0000000;-0.5215303
1995.0000000;0.6464849
1996.0000000;-0.1343708
1997.0000000;-0.8564388
1998.0000000;-1.6355317
1999.0000000;-0.7279167
2000.0000000;-0.8179894
2001.0000000;0.7216465
2002.0000000;-0.7155249
2003.0000000;-2.2038221
2004.0000000;-1.7896125
2005.0000000;-1.8536789
2006.0000000;-1.0966154
2007.0000000;-0.9980345
2008.0000000;-1.4624166
2009.0000000;-1.8397207
2010.0000000;-0.9780579
2011.0000000;-1.9845641
2012.0000000;-2.0593355
2013.0000000;-0.8297949
2014.0000000;-1.2687284
2015.0000000;-1.9951134