Year	Percent
2003	4.21051
2004	1.79617
2005	5.09939
2006	4.37746
2007	3.00295
2008	3.82776
2009	3.13785
2010	0.28683
2011	0.55055
2012	3.40444
2013	0.79453
2014	2.04742
2015	2.50435
2016	1.33311