Year	Percent
1996	0.12274
1997	0.0001
1998	0.00045
2000	0.01441
2001	10.39059
2002	15.359
2003	22.75399
2004	27.27759
2005	30.32864
2006	27.5244
2007	29.1336
2008	9.26796
2009	6.2153
2010	5.71207
2011	5.38658
2012	6.43024
2013	1.99272
2014	2.64083
2015	6.04695
2016	6.79633
2017	6.2933