Year	Percent
1991-01-01	0.0060320000000000000
1992-01-01	0.0033810000000000003
1993-01-01	0.3056950000000000000
1994-01-01	0.6033440000000000000
1995-01-01	0.6878610000000000000
1996-01-01	0.7981720000000000000
1997-01-01	0.8787870000000001000
1998-01-01	1.3099900000000000000
1999-01-01	2.1719000000000000000
2000-01-01	2.4661700000000000000
2001-01-01	2.2562100000000000000
2002-01-01	2.0684900000000000000
2003-01-01	1.6143500000000000000
2004-01-01	1.1300700000000001000
2005-01-01	0.9334479999999999000
2006-01-01	0.5821080000000000000
2007-01-01	0.4236380000000000000
2008-01-01	0.5003770000000001000
2009-01-01	13.6401000000000000000
2010-01-01	26.9158000000000000000
2011-01-01	25.9193000000000000000
2012-01-01	26.4062000000000000000
2013-01-01	26.7169000000000000000
2014-01-01	25.7628000000000000000