Year	Percent
1996	4.1667
1997	0
1998	4.3478
1999	7.6923
2000	3.5714
2001	3.125
2002	4.7619
2003	4.6512
2004	3.5088
2005	3.1746
2006	4.1096
2007	3.3708
2008	2
2009	2.68
2010	1.55
2011	1.44
2012	1.3
2014	1.63
2015	0.5
2016	1.3636
2017	0.9122