Year	Percent
1992	2.19221
1996	0.36271
1997	0.4909
1998	0.57391
1999	13.58431
2000	2.06004
2001	4.18606
2003	7.38326
2005	0.19677
2006	0.17962
2007	1.05181
2008	1.4297
2009	3.66292
2010	2.00434
2011	1.65201
2012	7.38535
2013	4.88263
2016	1.50926