Year	Percent
2002-01-01	18.0285
2003-01-01	17.5719
2004-01-01	14.3662
2005-01-01	15.0078
2006-01-01	17.1421
2007-01-01	13.3364
2008-01-01	10.4174
2009-01-01	26.3946
2010-01-01	27.0486
2011-01-01	22.0424
2012-01-01	25.6388
2013-01-01	28.1714
2014-01-01	26.8342
2015-01-01	31.4991
2016-01-01	45.9361