Year	Percent
1994-01-01	6.836741
1995-01-01	5.694945
1996-01-01	5.583050
1997-01-01	5.641998
1998-01-01	11.943450
1999-01-01	11.131160
2000-01-01	10.511900
2001-01-01	10.108180
2002-01-01	8.775269
2003-01-01	6.797378
2004-01-01	5.989164
2005-01-01	5.317018
2006-01-01	4.679096
2007-01-01	3.713151
2008-01-01	3.039409
2009-01-01	3.086648
2010-01-01	3.062284