1967.0000000;-1.0967383
1968.0000000;0.2512515
1969.0000000;-0.1802561
1970.0000000;-0.8528962
1971.0000000;-0.6173561
1972.0000000;-0.0044148
1973.0000000;-0.9448628
1974.0000000;-0.9083895
1975.0000000;-0.7058302
1976.0000000;-0.9480984
1977.0000000;0.8283049
1978.0000000;0.4755183
1979.0000000;-0.0797796
1980.0000000;-0.1688971
1981.0000000;-0.7960132
1982.0000000;-0.4090235
1983.0000000;-0.0519637
1984.0000000;0.1559603
1985.0000000;-0.9032725
1986.0000000;-1.3389107
1987.0000000;-0.6310480
1988.0000000;-0.5116197
1989.0000000;-1.6114473
1990.0000000;-0.6739278
1991.0000000;-0.8342216
1992.0000000;-0.6675697
1993.0000000;-0.7317463
1994.0000000;-0.4412219
1995.0000000;0.1111073
1996.0000000;0.2053167
1997.0000000;-0.2896684
1998.0000000;-1.4316685
1999.0000000;-0.9882078
2000.0000000;-1.3769938
2001.0000000;0.9203223
2002.0000000;-0.6939461
2003.0000000;-2.1131496
2004.0000000;-1.8636086
2005.0000000;-2.1747599
2006.0000000;-1.5268954
2007.0000000;-1.2756406
2008.0000000;-0.6464008
2009.0000000;-1.6811435
2010.0000000;-0.6537635
2011.0000000;-2.1100893
2012.0000000;-1.7600248
2013.0000000;-0.8496372
2014.0000000;-1.0126221
2015.0000000;-1.9539917