Year	Percent
2005-01-01	31.37330258775340
2006-01-01	34.69527059970720
2007-01-01	22.84442192137820
2008-01-01	18.38406459027020
2009-01-01	4.68438868976490
2010-01-01	15.46198107375540
2011-01-01	21.35046642367330
2012-01-01	15.22510139320200
2013-01-01	11.88789561273030
2014-01-01	9.71397733405286
2015-01-01	8.15087077489716
2016-01-01	8.17268112275134
2017-01-01	8.91513169824086