HOUSTON (AP) - Retail gasoline prices keep plummeting across Texas as crude oil prices fall on world markets.

The weekly AAA Texas survey released Thursday finds regular-grade self-serve gasoline averaging $3.28 per gallon statewide. That's 22 cents lower than last week and about 12 cents less than the national average.

Crude oil on the spot market has fallen from a record $147.27 per barrel on July 11th to between $87 and $90 now. The global economic crisis has slashed demand, and Gulf refineries are back to normal production levels after disruptions by Hurricane Ike.

The state's costliest gasoline is in El Paso, where regular fell 12 cents from last week to $3.47 per gallon. The cheapest is in Corpus Christi, where it fell 35 cents from last week to $3.05 per gallon.

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