Year	Percent
1996-01-01	100.0000
1997-01-01	95.2880
1998-01-01	92.4928
1999-01-01	86.1192
2000-01-01	88.5873
2001-01-01	95.5284
2002-01-01	97.2737
2003-01-01	94.7092
2004-01-01	93.9066
2005-01-01	94.1039
2006-01-01	97.1500
2007-01-01	97.4213