Year	Percent
2002	99.7416
2003	90.60914
2004	97.01493
2005	90.79903
2006	89.64706
2007	75.91743
2009	69.93603
2011	78.4188
2012	84.04255
2013	88.32272
2014	77.52101
2015	88.14969