Year	Percent
1960	-0.05824
1961	-0.06005
1962	-1.32021
1963	-0.07455
1964	0.70781
1965	2.17984
1966	0.83307
1967	0
1968	-0.60986
1969	0.06669
1970	-0.42032
1971	-1.72467
1972	-1.5849
1973	-1.2299
1974	-5.87061
1975	-3.96701
1976	-2.3969
1977	-0.66538
1978	-1.18882
1979	-2.05166
1980	-2.2531
1981	-0.37909
1982	-0.6648
1983	2.41348
1984	5.6232
1985	5.15265
1986	2.46201
1987	3.26728
1988	5.19568
1989	3.46834
1990	1.23822
1991	0.76303
1992	2.48315
1993	1.40722
1994	-0.0028
1995	-1.92671
1996	-2.17517
1997	-2.60891
1998	-2.37758
1999	-1.85237
2000	-2.26367
2001	-2.19286
2002	0.84282
2003	2.22118
2004	3.41327
2005	3.40086
2006	2.70693
2007	1.36274
2008	-0.18957
2009	-0.40323
2010	-1.04101
2011	-0.76938
2012	-1.3592
2013	-2.3015
2014	-2.66152
2015	-1.15324
2016	0.41495
2017	1.01539