Year	Percent
1995-01-01	4.4581700000000000
1996-01-01	2.8660000000000000
1997-01-01	2.4473200000000000
1998-01-01	3.4412599999999998
1999-01-01	4.2503400000000005
2000-01-01	4.2302000000000000
2001-01-01	4.3790000000000000
2002-01-01	4.9730800000000000
2003-01-01	7.3568899999999990
2004-01-01	12.2001000000000000
2005-01-01	17.6337000000000000
2006-01-01	23.0430000000000030
2007-01-01	26.5808000000000000
2008-01-01	25.2983000000000000
2009-01-01	29.3359000000000000
2010-01-01	33.7603000000000000
2011-01-01	37.7262000000000000
2012-01-01	36.1663000000000000
2013-01-01	32.7057000000000000
2014-01-01	28.2962000000000000
2015-01-01	26.2120000000000000
2016-01-01	25.2323000000000000