Year	Percent
1999-01-01	5.9458699999999990
2000-01-01	5.9841800000000000
2001-01-01	6.5856699999999995
2002-01-01	6.9762800000000000
2003-01-01	8.7414899999999990
2004-01-01	11.9306000000000000
2005-01-01	11.1049000000000000
2006-01-01	14.0913000000000000
2007-01-01	15.4515000000000000
2008-01-01	9.1869400000000000
2009-01-01	17.6122000000000000
2010-01-01	16.6941000000000000
2011-01-01	13.4534000000000000
2012-01-01	19.0666000000000000
2013-01-01	23.0867000000000000
2014-01-01	21.2773000000000000
2015-01-01	27.7984000000000000
2016-01-01	31.3181000000000000