Year	Percent
2003-01-01	37.1236088890720
2004-01-01	37.1553019476936
2005-01-01	37.8630496919534
2006-01-01	37.4423092068779
2007-01-01	37.4086499072762
2008-01-01	37.3564852098373
2009-01-01	37.7849719513654
2010-01-01	37.4864678162659
2011-01-01	37.6641310614246
2012-01-01	37.6572579185113
2013-01-01	38.1861740002064
2014-01-01	39.7476195834294