Date

Basic Rate +/-

EMA Rate

Gasoline Escalator

By Act of Congress

1896 – 1924*

.00

*No EMA Authorized

Jan 1, 1925

4.0 cents

4.0 cents

Jul 1, 1934

1.0

5.0

Dec 17, 1943

1.0

6.0

Apr 1, 1948

1.0

7.0

Nov 1, 1949

1.0

8.0

Jul 1, 1951

1.0

9.0

Jun 14, 1958

1.0

10.0

Oct 13, 1962

2.0

12.0

By Contract

Jul 20, 1973

2.0

14.0

Mar 2, 1974

1.0

15.0

Jun 8, 1974

15.5

½ cent

Jul 21, 1975

1.5

17.0

Jul 21, 1976

1.0

18.0

May 7, 1977

18.5

½ cent

Jul 22, 1978

.50

19.0

Feb 10, 1979

19.5

½ cent

May 19, 1979

20.0

½ cent

Jun 16, 1979

20.5

½ cent

Jul 21, 1979

21.0

½ cent

Jul 21, 1979

1.0

22.0

Aug 17, 1979

22.5

½ cent

Sep 8, 1979

23.0

½ cent

Oct 20, 1979

23.5

½ cent

Nov 17, 1979

24.0

½ cent

Feb 9, 1980

24.5

½ cent

Mar 8, 1980

25.0

½ cent

Apr 19, 1980

26.0

1.0 cent

May 17, 1980

26.5

½ cent

Jul 19, 1980

1.0

27.5

Mar 21, 1981

28.0

½ cent

Apr 18, 1981

29.0

1.0 cent

May 16, 1981

29.5

½ cent

Jul 25, 1981

.50

30.0

Jul 24, 1982

1.0

31.0

Jul 23, 1983

.50

31.5

Mar 16, 1985

31.0

- ½ cent

Jul 20, 1985

31.5

½ cent

Jul 20, 1985

1.0

32.5

Apr 12, 1986

32.0

- ½ cent

May 10, 1986

31.0

- 1.0 cent

Jun 7, 1986

30.0

- 1.0 cent

Jul 19, 1986

30.5

½ cent

Sep 13, 1986

30.0

- ½ cent

Oct 11, 1986

29.5

- ½ cent

May 9, 1987

30.0

½ cent

Sep 12, 1987

30.5

½ cent

May 7, 1988

30.0

- ½ cent

Oct 8, 1988

30.5

½ cent

Jun 13, 1989

31.0

½ cent

Jul 1, 1989

31.5

½ cent

Nov 4, 1989

31.0

- ½ cent

Oct 6, 1990

32.0

1.0 cent

Nov 3, 1990

32.5

½ cent

Dec 1, 1990

2.5

35.0

Mar 9, 1991

34.5

- ½ cent

Apr 16, 1991

33.5

- 1 cent