Do you have the rate for Collin county?
1991 - 0.2209
1992 - 0.26
1993 - 0.26
1994 - 0.26
1995 - 0.26
1996 - 0.26
1997 - 0.26
1998 - 0.25
1999 - 0.25
2000 - 0.25
2001 - 0.25
2002 - 0.25
2003 - 0.25
2004 - 0.25
2005 - 0.25
2006 - 0.245
Source can be found here.