Year	Percent
1994-01-01	4.0758000000000000
1995-01-01	3.2198300000000000
1996-01-01	2.9924000000000000
1997-01-01	2.9986099999999998
1998-01-01	3.6134400000000000
1999-01-01	4.3598200000000000
2000-01-01	4.1454900000000010
2001-01-01	4.1445300000000005
2002-01-01	5.7845100000000000
2003-01-01	7.2731800000000000
2004-01-01	12.5363000000000000
2005-01-01	15.0974000000000000
2006-01-01	22.8053000000000000
2007-01-01	25.7148000000000000
2008-01-01	24.2400000000000000
2009-01-01	28.9591000000000000
2010-01-01	25.7585000000000000
2011-01-01	19.5251000000000000
2012-01-01	18.8380000000000000
2013-01-01	16.5557000000000000
2014-01-01	16.9321000000000000
2015-01-01	15.4128000000000000
2016-01-01	19.3978000000000000