Year	Percent
1982	7.37839
1983	3.51056
1984	4.10712
1985	3.68578
1986	2.45388
1987	2.86017
1988	4.12325
1989	4.75703
1990	4.98988
1991	5.04428
1992	3.014
1993	3.03373
1994	2.62467
1995	2.80715
1996	2.79594
1997	2.48441
1998	5.26416
1999	1.77439
2000	-2.97527
2001	-1.48484
2002	5.56072
2003	1.55288
2004	3.38213
2005	2.04567
2006	2.87311
2007	1.06476
2008	3.02926
2009	1.54926
2010	1.54014
2011	3.77386
2012	3.32443
2013	0.15387
2014	-3.29286
2015	-1.51043
2016	6.20697
2017	0.01951