Year	Percent
1994-01-01	1.7379200000000001
1995-01-01	2.5417000000000000
1996-01-01	3.5315600000000000
1997-01-01	4.1875400000000000
1998-01-01	4.7617300000000000
1999-01-01	5.0428200000000000
2000-01-01	10.0610000000000000
2001-01-01	10.6539000000000000
2002-01-01	13.4509000000000000
2003-01-01	18.8110000000000000
2004-01-01	18.5514000000000000
2005-01-01	18.8182000000000000
2006-01-01	19.2819000000000000
2007-01-01	17.7767000000000000
2008-01-01	15.9654000000000000
2009-01-01	16.2871000000000000
2010-01-01	14.2072000000000000
2011-01-01	11.3390000000000000
2012-01-01	10.7025000000000000