Research undertaken by Glenn Jones (yet to be published) has also found that theprice of abalone was steady from 1940 to 1960, and then increased from about $10per pound to $70 per pound by 2000, and that the price of raw oysters was steadyfrom 1860 to 1960, then increased from about 50 cents per oyster to $2.50 peroyster by 1980, and since 1980 has been steady. What movements in supply anddemand would be consistent with the changes in the prices of abalone and rawoysters?What might be the factors that have caused these patterns of changes indemand and supply?