Year	Percent
2005	34.45596
2006	34.5681
2007	49.15518
2008	35.95185
2009	60.09705
2010	72.64409
2011	60.01384
2012	70.90339
2013	53.31341
2014	38.80152
2015	29.48531
2016	37.06603
2017	39.28869