Year	Percent
1996-01-01	10.4146
1997-01-01	11.2706
1998-01-01	11.6579
1999-01-01	13.6385
2000-01-01	14.9917
2001-01-01	17.7432
2002-01-01	19.0641
2003-01-01	22.3202
2004-01-01	24.2874
2005-01-01	26.6995
2006-01-01	27.1379
2007-01-01	30.2393
2008-01-01	31.3466
2009-01-01	29.0031
2010-01-01	26.1354
2011-01-01	31.3411
2012-01-01	26.4513
2013-01-01	30.2428
2014-01-01	26.7477
2015-01-01	34.5372
2016-01-01	37.0857