Year	Percent
1996-01-01	23.3548
1997-01-01	23.5292
1998-01-01	26.3655
1999-01-01	28.9299
2000-01-01	25.1801
2001-01-01	24.4935
2002-01-01	21.2026
2003-01-01	23.0563
2004-01-01	35.8676
2005-01-01	38.3309
2006-01-01	38.7976
2007-01-01	34.2354
2008-01-01	35.3506
2009-01-01	24.6378
2010-01-01	28.7417
2011-01-01	27.8579
2012-01-01	28.7046
2013-01-01	24.8606
2014-01-01	26.9040
2015-01-01	32.8059
2016-01-01	46.0558