Returning some petrol tax dollars to consumers

If I am not mistaken the petrol tax is based on a fixed percentage of the petrol price. The price has gone up from around $1.80 or less to above $2.00 on average recently. This means that petrol tax collected will proportionally increase by about 10%.

Would be nice if the tax can be adjusted downwards just a little to keep petrol price from running away. Transportation cost for all goods and