Year	Percent
1995	0.48265
1996	2.08011
1997	2.27157
1998	3.69938
1999	6.21024
2000	4.85335
2001	4.22577
2002	3.54838
2003	5.26925
2004	3.11028
2005	3.95082
2006	6.53876
2007	7.60049
2008	7.36058
2009	5.10152
2010	2.38027
2011	2.2727
2012	2.5901
2013	1.61366
2014	6.87123
2015	0.32163
2016	3.63143
2017	3.72013