| Gasoline Tax Rate* | Start Date | End Date | Days Since Last Adjustment | Years Since Last Adjustment |
|---|---|---|---|---|
| 1 | June 21, 1932 | June 16, 1933 | 360 | 1.0 |
| 1.5 | June 17, 1933 | December 31, 1933 | 197 | 0.5 |
| 1 | January 1, 1934 | June 30, 1940 | 2,372 | 6.5 |
| 1.5 | July 1, 1940 | October 31, 1951 | 4,139 | 11.3 |
| 2 | November 1, 1951 | June 30, 1956 | 1,703 | 4.7 |
| 3 | July 1, 1956 | September 30, 1959 | 1,186 | 3.3 |
| 4 | October 1, 1959 | March 31, 1983 | 8,582 | 23.5 |
| 9 | April 1, 1983 | November 30, 1990 | 2,800 | 7.7 |
| 14 | December 1, 1990 | September 30, 1993 | 1,034 | 2.8 |
| 18.3 | October 1, 1993 | Ongoing | 9,645** | 26.4 |
