Year	Percent
1996-01-01	4.0417300000000000
1997-01-01	4.0752460000000000
1998-01-01	7.5176060000000000
1999-01-01	7.4282070000000004
2000-01-01	6.2123760000000000
2001-01-01	5.6654450000000000
2002-01-01	5.9549949999999990
2003-01-01	6.1147790000000000
2004-01-01	5.5449500000000000
2005-01-01	4.4911610000000000
2006-01-01	4.6854100000000000
2007-01-01	3.8395919999999997
2008-01-01	3.4483330000000003
2009-01-01	3.4510860000000000
2010-01-01	2.9143150000000000
2011-01-01	3.0395820000000000
2012-01-01	2.9992060000000000
2013-01-01	3.0741230000000000
2014-01-01	1.1946170000000000