1967.0000000;-1.3219941
1968.0000000;0.2635868
1969.0000000;-0.9005879
1970.0000000;-0.5776284
1971.0000000;-1.6576037
1972.0000000;-0.6109375
1973.0000000;-0.9611244
1974.0000000;-0.9832746
1975.0000000;-0.6146882
1976.0000000;-1.5548494
1977.0000000;-0.1291987
1978.0000000;0.3241048
1979.0000000;-0.3793619
1980.0000000;0.2565171
1981.0000000;0.0619365
1982.0000000;-0.0727905
1983.0000000;-0.1405384
1984.0000000;1.3219512
1985.0000000;0.8302451
1986.0000000;-1.2988535
1987.0000000;0.1313049
1988.0000000;0.5961107
1989.0000000;-1.4608526
1990.0000000;-1.7423084
1991.0000000;-1.7141255
1992.0000000;-1.6066470
1993.0000000;-0.7560616
1994.0000000;-0.4463273
1995.0000000;0.8380283
1996.0000000;-0.3242845
1997.0000000;-0.8673801
1998.0000000;-1.7829556
1999.0000000;-0.7695098
2000.0000000;-0.9911333
2001.0000000;0.8624090
2002.0000000;-1.1337663
2003.0000000;-2.5343151
2004.0000000;-2.0863252
2005.0000000;-2.2135005
2006.0000000;-1.6017616
2007.0000000;-1.4045107
2008.0000000;-1.5809952
2009.0000000;-2.2905881
2010.0000000;-1.2386674
2011.0000000;-2.3796940
2012.0000000;-2.4947839
2013.0000000;-0.7693383
2014.0000000;-1.0374885
2015.0000000;-2.1970191