1967.0000000;-0.1939155
1968.0000000;-0.0062422
1969.0000000;-1.0179904
1970.0000000;-0.5801100
1971.0000000;-1.3796763
1972.0000000;-0.4482116
1973.0000000;-0.9572574
1974.0000000;-0.6301302
1975.0000000;-0.4922469
1976.0000000;-1.4461617
1977.0000000;0.3114232
1978.0000000;0.4678244
1979.0000000;0.4159321
1980.0000000;0.7632552
1981.0000000;0.2602699
1982.0000000;0.0967381
1983.0000000;0.0004467
1984.0000000;0.4305917
1985.0000000;0.1276799
1986.0000000;-1.4588294
1987.0000000;0.1414373
1988.0000000;0.2423038
1989.0000000;-1.8820162
1990.0000000;-1.6772685
1991.0000000;-1.1016498
1992.0000000;-1.2055945
1993.0000000;-0.6415460
1994.0000000;-0.9538221
1995.0000000;0.6109952
1996.0000000;-0.4957911
1997.0000000;-0.8836166
1998.0000000;-1.4101815
1999.0000000;-0.8607349
2000.0000000;-1.2185024
2001.0000000;0.5217598
2002.0000000;-1.0809947
2003.0000000;-3.1130714
2004.0000000;-0.6005416
2005.0000000;-2.1211278
2006.0000000;-1.1464922
2007.0000000;-0.8707811
2008.0000000;-1.6768231
2009.0000000;-3.1202910
2010.0000000;-0.8411748
2011.0000000;-3.1762710
2012.0000000;-2.1616054
2013.0000000;-0.5692673
2014.0000000;-0.9922090
2015.0000000;-2.8772645