Year	Percent
2000-01-01	1.7234700000000000
2001-01-01	1.7038300000000000
2002-01-01	2.2696099999999997
2003-01-01	2.4705200000000000
2004-01-01	2.3874600000000000
2005-01-01	4.3846800000000000
2006-01-01	6.1525700000000000
2007-01-01	6.4466500000000000
2008-01-01	8.7577100000000010
2009-01-01	14.0167000000000000
2010-01-01	17.2601000000000000
2011-01-01	22.1243000000000000
2012-01-01	29.1077000000000000
2013-01-01	31.0818000000000000
2014-01-01	32.9032000000000000
2015-01-01	29.5955000000000000
2016-01-01	27.4830000000000000
2017-01-01	24.6607000000000000