Year	Percent
1990-01-01	2.9670000000000000
1991-01-01	2.5877900000000000
1992-01-01	3.6821900000000003
1993-01-01	6.0976900000000000
1994-01-01	10.1719000000000000
1995-01-01	5.1162400000000000
1996-01-01	8.4785000000000000
1997-01-01	10.4590000000000010
1998-01-01	10.7285000000000000
1999-01-01	12.9586000000000000
2000-01-01	15.0419000000000000
2001-01-01	16.1038000000000000
2002-01-01	18.0461000000000000
2003-01-01	17.5602000000000000
2004-01-01	20.6943000000000000
2005-01-01	18.0766000000000000
2006-01-01	17.1341000000000000
2007-01-01	14.5158000000000000
2008-01-01	13.6366000000000000
2009-01-01	39.2853000000000000
2010-01-01	43.2884000000000000
2011-01-01	39.4323000000000000
2012-01-01	38.0567000000000000
2013-01-01	40.9710000000000040
2014-01-01	37.9686000000000000
2015-01-01	38.9919000000000000
2016-01-01	43.8291000000000000