Year	Percent
1993-01-01	16.2633
1994-01-01	17.7246
1995-01-01	15.2120
1996-01-01	11.2946
1997-01-01	12.6015
1998-01-01	14.0671
1999-01-01	14.4724
2000-01-01	16.0682
2001-01-01	18.9113
2002-01-01	20.6669
2003-01-01	22.8512
2004-01-01	25.9200
2005-01-01	29.1282
2006-01-01	32.9212
2007-01-01	31.8733
2008-01-01	32.4023
2009-01-01	39.8962
2010-01-01	44.4648
2011-01-01	39.4531
2012-01-01	36.4160
2013-01-01	37.7518
2014-01-01	39.4406
2015-01-01	40.5622
2016-01-01	42.5142