Year	Percent
1998-01-01	65.2912
1999-01-01	51.5737
2000-01-01	45.9423
2001-01-01	38.6363
2002-01-01	35.0547
2003-01-01	31.9247
2004-01-01	0.0000
2005-01-01	0.0000
2006-01-01	0.0000
2007-01-01	23.2821
2008-01-01	16.1778