The United States Department of Energy estimates that of the gas vented or flared, 80% is flared and 20% is vented. This ratio has now changed as the apposition to the physical sight of flaring has caused producers to decrease flaring and increase venting. Stripper wells are not included in these estimates as they produce less than 10 barrels of oil per day and are unlikely to have been reported by well owners. Gas vented and flared in Wyoming accounts for more than half of all the oil and gas vented in the United States.