Year	Percent
1989-01-01	2.7135800000000000
1990-01-01	1.6704200000000000
1991-01-01	1.4240000000000002
1992-01-01	2.8524000000000000
1993-01-01	4.3728700000000000
1994-01-01	4.8521400000000000
1995-01-01	5.6062800000000000
1996-01-01	7.3224100000000005
1997-01-01	8.0330500000000000
1998-01-01	10.4148000000000000
1999-01-01	15.0175000000000000
2000-01-01	16.6484000000000000
2001-01-01	19.4291000000000000
2002-01-01	19.1741000000000000
2003-01-01	23.4928000000000000
2004-01-01	24.9069000000000000
2005-01-01	26.8862000000000000
2006-01-01	26.5546000000000000
2007-01-01	24.0700000000000000
2008-01-01	20.0297000000000000
2009-01-01	25.7949000000000000
2010-01-01	25.2387000000000000
2011-01-01	23.1740000000000000
2012-01-01	23.8828000000000000
2013-01-01	24.2000000000000000
2014-01-01	21.6369000000000000
2015-01-01	21.5813000000000000
2016-01-01	27.4122000000000000