Year	Percent
2005-01-01	2.37
2006-01-01	2.48
2007-01-01	2.27
2008-01-01	2.23
2009-01-01	2.62
2010-01-01	2.73
2011-01-01	3.15
2012-01-01	3.24
2013-01-01	3.77
2014-01-01	3.72
2015-01-01	3.94
2016-01-01	4.86