Year	Percent
1994	10.991
1995	2.1071
1996	0.24993
1997	1.29193
1998	4.58832
1999	10.71196
2000	4.35693
2001	12.86703
2002	15.32203
2003	6.30119
2004	3.28155
2005	12.4982
2006	33.75624
2007	10.48942
2008	1.25554
2009	1.08232
2010	2.3709
2011	21.94
2012	20.65066
2013	1.86763
2014	2.44269
2015	1.82777
2016	1.83254