1967.0000000;-0.7920501
1968.0000000;0.1310099
1969.0000000;-0.8190348
1970.0000000;-0.9238294
1971.0000000;-1.0339386
1972.0000000;-0.2021871
1973.0000000;-1.7647353
1974.0000000;-1.2809999
1975.0000000;0.1452396
1976.0000000;-1.2672117
1977.0000000;0.5343467
1978.0000000;0.6906765
1979.0000000;-0.3339848
1980.0000000;0.4915789
1981.0000000;0.0987767
1982.0000000;-0.1452320
1983.0000000;-0.2770504
1984.0000000;0.6643668
1985.0000000;-0.6253409
1986.0000000;-1.5108132
1987.0000000;-0.5520927
1988.0000000;0.0879067
1989.0000000;-1.5090743
1990.0000000;-1.6699287
1991.0000000;-0.9026661
1992.0000000;-0.8125092
1993.0000000;-0.6342410
1994.0000000;-0.4351003
1995.0000000;0.5691505
1996.0000000;-1.1227360
1997.0000000;-1.4825436
1998.0000000;-1.9171478
1999.0000000;-1.2183738
2000.0000000;-1.5401428
2001.0000000;0.4996059
2002.0000000;-1.9766682
2003.0000000;-3.2912555
2004.0000000;-2.1255295
2005.0000000;-2.3506804
2006.0000000;-2.3912840
2007.0000000;-1.9553938
2008.0000000;-1.7010863
2009.0000000;-2.7395196
2010.0000000;-0.9032314
2011.0000000;-2.7741060
2012.0000000;-2.3291655
2013.0000000;-0.6340760
2014.0000000;-0.9530322
2015.0000000;-2.6368761