Year	%
2001	44.97380430484646
2002	44.250732841769306
2003	42.89224689277836
2004	37.21886031826962
2005	39.399798938425036
2006	45.679865232224735
2007	58.85065593058961
2008	74.42968667357991
2009	76.64514434566868
2010	72.25870615719555
2011	55.48962990733518
2012	51.52197860918907
2013	79.45232774022148
2014	84.87585101166178