Year	Percent
1996-01-01	14.7727
1997-01-01	15.0442
1998-01-01	22.3077
1999-01-01	20.8633
2000-01-01	25.1908
2001-01-01	28.7805
2002-01-01	23.0512
2003-01-01	24.9053
2004-01-01	22.6306
2005-01-01	27.9937
2006-01-01	23.9594
2007-01-01	27.1625
2008-01-01	26.9547
2009-01-01	26.9618
2010-01-01	27.8978
2011-01-01	32.4570
2012-01-01	30.0990
2013-01-01	22.1501
2014-01-01	26.6387
2015-01-01	32.7185
2016-01-01	27.0504