1967.0000000;-1.4855491
1968.0000000;0.3951185
1969.0000000;-0.8932630
1970.0000000;-0.3029950
1971.0000000;-1.0498194
1972.0000000;-0.5137575
1973.0000000;-0.8737970
1974.0000000;-0.7483257
1975.0000000;-0.7172376
1976.0000000;-1.1616156
1977.0000000;-0.2526421
1978.0000000;-0.0003819
1979.0000000;-0.0779197
1980.0000000;-0.3499426
1981.0000000;-0.6449043
1982.0000000;-0.2673432
1983.0000000;-0.1346143
1984.0000000;1.1625140
1985.0000000;1.0064292
1986.0000000;-1.1732124
1987.0000000;-0.0066237
1988.0000000;0.0696175
1989.0000000;-1.2427789
1990.0000000;-1.3804829
1991.0000000;-1.6752324
1992.0000000;-1.1075997
1993.0000000;-0.7661493
1994.0000000;-0.3780385
1995.0000000;0.5267588
1996.0000000;-0.2784185
1997.0000000;-0.6977243
1998.0000000;-1.7006093
1999.0000000;-0.5516986
2000.0000000;-0.9013552
2001.0000000;0.6363091
2002.0000000;-0.1897667
2003.0000000;-2.0435891
2004.0000000;-1.7583803
2005.0000000;-1.7870449
2006.0000000;-1.2198818
2007.0000000;-0.6585721
2008.0000000;-1.4943756
2009.0000000;-1.8111756
2010.0000000;-0.7124299
2011.0000000;-1.7343824
2012.0000000;-1.8230581
2013.0000000;-0.7898027
2014.0000000;-0.7612007
2015.0000000;-1.2028755