Year	Percent
1986	0.16914
1987	0.02678
1988	0.09854
1992	-0.01078
1993	0.01413
1994	0.08896
1995	0.01416
1996	0.01355
1997	0.01222
1998	0.00674
2002	0.02756
2003	-0.06398
2004	0.2186
2005	0.09261
2006	0.00187
2007	-0.03804
2008	0.07503
2010	0.38569
2011	0.02824
2012	-0.05121
2013	0.3252
2014	0.51461
2015	0.00438
2016	0.02184
2017	0.19233