| Historical Yearly Average California Gasoline Prices per Gallon 1970 to 2005 Based on 2005 Dollars, Adjusted for Inflation |
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| Year | Yearly Average | Peak Price | Price Deflator (2005=100) |
Yearly Average Adjusted for Inflation | |
| 1970 | $0.3415 | 25.10 | $1.3606 | ||
| 1971 | $0.3577 | 26.35 | $1.3575 | ||
| 1972 | $0.3489 | 27.49 | $1.2692 | ||
| 1973 | $0.3856 | 29.03 | $1.3828 | ||
| 1974 | $0.5279 | 31.66 | $1.6674 | ||
| 1975 | $0.5867 | 34.63 | $1.6942 | ||
| 1976 | $0.6099 | 36.63 | $1.6650 | ||
| 1977 | $0.6469 | 38.96 | $1.6604 | ||
| 1978 | $0.6525 | 41.69 | $1.5651 | ||
| 1979 | $0.8955 | 45.16 | $1.9829 | ||
| 1980 | $1.2290 | 49.26 | $2.4931 | ||
| 1981* | $1.3460 | $1.660 | 53.89 | $2.4977 | |
| 1982 | $1.2460 | 57.17 | $2.1795 | ||
| 1983 | $1.1160 | 59.42 | $1.8782 | ||
| 1984 | $1.1290 | 61.66 | $1.8310 | ||
| 1985 | $1.1155 | 63.54 | $1.7545 | ||
| 1986 | $0.8740 | 64.94 | $1.3459 | ||
| 1987 | $0.8855 | 66.71 | $1.3274 | ||
| 1988 | $0.9045 | 68.99 | $1.3111 | ||
| 1989 | $0.9730 | 71.60 | $1.3589 | ||
| 1990 | $1.0900 | 74.37 | $1.4656 | ||
| 1991 | $1.1531 | 76.99 | $1.4976 | ||
| 1992 | $1.0998 | 78.73 | $1.3969 | ||
| 1993 | $1.2235 | 80.55 | $1.5189 | ||
| 1994 | $1.2100 | 82.26 | $1.4709 | ||
| 1995 | $1.2335 | 84.14 | $1.4679 | ||
| 1996 | $1.3171 | $1.545 | 85.54 | $1.5397 | |
| 1997 | $1.3330 | $1.438 | 86.96 | $1.5329 | |
| 1998 | $1.1647 | $1.243 | 87.93 | $1.3246 | |
| 1999 | $1.3621 | $1.624 | 89.20 | $1.5270 | |
| 2000 | $1.6634 | $1.847 | 91.15 | $1.8249 | |
| 2001 | $1.6366 | $1.954 | 93.33 | $1.7536 | |
| 2002 | $1.5138 | $1.622 | 94.88 | $1.5955 | |
| 2003 | $1.8308 | $2.145 | 96.61 | $1.8950 | |
| 2004 | $2.1200 | $2.402 | 98.51 | $2.1521 | |
| 2005 | $2.390 | $3.056 | 100.00 | $2.390 | |