1967.0000000;-1.2290202
1968.0000000;0.3669806
1969.0000000;-0.5523558
1970.0000000;-0.4505586
1971.0000000;-1.4666078
1972.0000000;-0.5418965
1973.0000000;-0.8758587
1974.0000000;-0.8968807
1975.0000000;-0.6483347
1976.0000000;-1.4818093
1977.0000000;-0.2591166
1978.0000000;0.2592368
1979.0000000;-0.3767527
1980.0000000;0.1890749
1981.0000000;-0.0159981
1982.0000000;-0.1222628
1983.0000000;-0.2079397
1984.0000000;1.2017305
1985.0000000;0.7222342
1986.0000000;-1.2279161
1987.0000000;-0.1837797
1988.0000000;0.3246639
1989.0000000;-1.3397784
1990.0000000;-1.6086376
1991.0000000;-1.6479552
1992.0000000;-1.4937615
1993.0000000;-0.7239568
1994.0000000;-0.4699044
1995.0000000;0.7377508
1996.0000000;-0.2505422
1997.0000000;-0.8430214
1998.0000000;-1.6961501
1999.0000000;-0.7307581
2000.0000000;-0.8875697
2001.0000000;0.6926612
2002.0000000;-0.8009881
2003.0000000;-2.3422737
2004.0000000;-1.9214193
2005.0000000;-2.0040483
2006.0000000;-1.4025476
2007.0000000;-1.1488845
2008.0000000;-1.5156037
2009.0000000;-2.0331283
2010.0000000;-0.9669992
2011.0000000;-2.0672565
2012.0000000;-2.2241664
2013.0000000;-0.7374082
2014.0000000;-0.8955160
2015.0000000;-1.7954551