Year	Percent
1991-01-01	3.0710100000000000
1992-01-01	0.7034040000000000
1993-01-01	1.3421500000000000
1994-01-01	1.3607600000000000
1995-01-01	0.6212720000000000
1996-01-01	0.9869430000000000
1997-01-01	2.3440200000000000
1998-01-01	2.1994100000000000
1999-01-01	0.5402760000000000
2000-01-01	2.5902200000000000
2001-01-01	0.5829770000000001
2002-01-01	31.6951000000000000
2003-01-01	5.6411300000000000
2004-01-01	5.3053400000000000
2005-01-01	1.6948200000000000
2006-01-01	19.6061000000000000
2007-01-01	5.5555400000000010
2008-01-01	3.4805800000000002
2009-01-01	0.3428340000000000
2010-01-01	1.5855800000000000
2011-01-01	3.4769099999999997
2012-01-01	0.4009440000000000