Year	Percent
1996-01-01	27.1305000000000000
1997-01-01	18.4592000000000000
1998-01-01	6.2657800000000000
1999-01-01	12.0264000000000000
2000-01-01	10.7649000000000000
2001-01-01	8.7793400000000000
2002-01-01	9.1174900000000000
2003-01-01	7.6990800000000000
2004-01-01	6.4689900000000000
2005-01-01	6.2397500000000000
2006-01-01	5.5064900000000000
2007-01-01	5.3066699999999996
2008-01-01	3.9810000000000003
2009-01-01	4.2771200000000000
2010-01-01	4.6173500000000000
2011-01-01	4.7335199999999995
2012-01-01	5.9520200000000000
2013-01-01	4.6346000000000000
2014-01-01	3.6261800000000000
2015-01-01	3.3676300000000000
2016-01-01	4.5314000000000000