Year	Percent
1992-01-01	1.6134899999999999
1993-01-01	1.6637800000000000
1994-01-01	1.8555400000000002
1995-01-01	2.1189200000000000
1996-01-01	2.2474900000000000
1997-01-01	2.3686000000000000
1998-01-01	2.7712500000000000
1999-01-01	3.2081000000000000
2000-01-01	3.4379600000000000
2001-01-01	4.3036600000000000
2002-01-01	5.0501100000000000
2003-01-01	6.1372800000000005
2004-01-01	7.4729000000000000
2005-01-01	8.1264899999999990
2006-01-01	8.8526899999999990
2007-01-01	10.4810000000000000
2008-01-01	9.4844400000000000
2009-01-01	9.4067300000000000
2010-01-01	9.7901800000000000
2011-01-01	10.2829000000000000
2012-01-01	11.0023000000000000
2013-01-01	12.0524000000000000
2014-01-01	13.0837000000000000
2015-01-01	13.6816000000000000
2016-01-01	16.1846000000000000