Year	Percent
2005-01-01	44.5695884881623
2006-01-01	44.9715470896414
2007-01-01	44.8804879039028
2008-01-01	44.0747191542528
2009-01-01	42.1896965978225
2010-01-01	42.4857103148554
2011-01-01	42.2706292026547
2012-01-01	42.7978397176101
2013-01-01	41.9733927516888
2014-01-01	41.2450363703743
2015-01-01	40.9573690723952
2016-01-01	40.8073387046115
2017-01-01	40.7523086280892