Effective 8/1/08:
$0.45 a mile

5/1/08 - 7/31/08:
$ 0.40 a mile

10/1/05 - 4/30/08:
$ 0.30 a mile

7/1/01 - 9/30/05:
$ 0.28 a mile

6/22/98 - 6/30/01:
$ 0.27 a mile