1967.0000000;-1.2068981
1968.0000000;-0.0918692
1969.0000000;-0.9729322
1970.0000000;-0.6418509
1971.0000000;-1.7135930
1972.0000000;-0.6860970
1973.0000000;-1.0118510
1974.0000000;-1.0472201
1975.0000000;-0.6386467
1976.0000000;-1.6166235
1977.0000000;-0.1991119
1978.0000000;0.3808195
1979.0000000;-0.3881285
1980.0000000;0.3209327
1981.0000000;0.0897001
1982.0000000;-0.0108187
1983.0000000;-0.2854408
1984.0000000;1.0214095
1985.0000000;0.3173082
1986.0000000;-1.3425764
1987.0000000;-0.2929917
1988.0000000;0.1122155
1989.0000000;-1.4930530
1990.0000000;-1.6040964
1991.0000000;-1.7645966
1992.0000000;-1.6502764
1993.0000000;-0.6898166
1994.0000000;-0.4250454
1995.0000000;0.7906179
1996.0000000;-0.3127309
1997.0000000;-0.8698679
1998.0000000;-1.7548971
1999.0000000;-0.7882591
2000.0000000;-0.9137852
2001.0000000;0.6474088
2002.0000000;-1.0458741
2003.0000000;-2.4523301
2004.0000000;-1.9855700
2005.0000000;-2.1387703
2006.0000000;-1.6082609
2007.0000000;-1.3355632
2008.0000000;-1.5550723
2009.0000000;-2.2820673
2010.0000000;-1.0959501
2011.0000000;-2.2717874
2012.0000000;-2.3247566
2013.0000000;-0.7505789
2014.0000000;-1.0184605
2015.0000000;-2.0906334