Year	Percent
1996	2.8
1997	2.99
1998	5.06
2000	1.11
2001	1.26
2003	3.38
2004	1.57
2005	0.93
2006	0.92
2007	1.08
2008	0.81
2009	0.7
2010	0.69
2011	0.4
2012	0.51
2013	0.46
2014	0.54
2015	0.49
2016	1
2017	0.63
2018	0.44
2019	0.4
2020	0.86