Year	Percent
2002	7.806
2004	4.53619
2005	6.93922
2007	8.42387
2008	6.84488
2009	6.86452
2010	7.20613
2011	7.02699
2012	8.85496
2013	13.82222
2014	14.3909
2015	14.30521
2016	16.19573