Year	Percent
1961	1.11939
1962	5.14294
1963	3.24054
1964	4.70626
1965	4.72361
1966	4.61786
1967	1.08006
1968	3.61013
1969	3.83838
1970	1.82231
1971	2.57104
1972	3.77695
1973	5.16734
1974	1.84847
1975	-0.08509
1976	3.8171
1977	2.24957
1978	2.91561
1979	2.77444
1980	0.84991
1981	2.227
1982	-4.36197
1983	1.57484
1984	4.91151
1985	3.76515
1986	1.14035
1987	2.73988
1988	3.08982
1989	0.51511
1990	-1.33044
1991	-3.44826
1992	-0.34771
1993	1.53797
1994	3.49385
1995	1.83088
1996	0.5224
1997	3.18336
1998	2.98643
1999	4.29671
2000	4.25802
2001	0.74859
2002	2.09001
2003	0.79312
2004	2.05816
2005	2.18891
2006	1.80891
2007	1.07767
2008	-0.08677
2009	-4.05432
2010	1.94158
2011	2.12759
2012	0.55158
2013	1.30362
2014	1.74722
2015	0.16327
2016	0.20576
2017	1.80241