Year	Percent
2001-01-01	29.6296
2002-01-01	28.5464
2003-01-01	24.2839
2004-01-01	23.9796
2005-01-01	19.6145
2006-01-01	21.7631
2007-01-01	24.3073
2008-01-01	24.3073
2009-01-01	24.3073
2010-01-01	30.3171
2011-01-01	17.5716
2012-01-01	16.6546
2013-01-01	25.1719
2014-01-01	28.0053
2015-01-01	28.3976
2016-01-01	31.6911