Year	Percent
2002	0.06845
2003	4.07168
2004	1.37459
2005	4.57452
2006	6.58307
2007	0.86505
2008	5.71539
2009	0.08769
2010	4.25323
2011	2.04866
2012	0.83595
2013	2.48589
2014	4.19851
2015	1.544
2016	1.90864
2017	1.62946