The Peace of Utrecht in 1713 seems to have brought little relief. Tobacco prices failed to improve until after the passage of the inspection act in 1730. In 1731 tobacco sold for as much as twelve shillings six pence per hundred pounds, despite the fact that Virginia exported 34,000,000 pounds. In a further attempt to improve the quality and the price of tobacco the General Assembly ordered the constables in each district to enforce the law forbidding the planters to harvest suckers. Anyone found tending suckers after the last of July was to be heavily penalized. These two measures seem to have produced the desired effects; in 1736 tobacco sold for fifteen shillings per hundred pounds. Unlike Queen Anne's War, King George's War seemed to stimulate tobacco prices and they remained relatively good for a number of years after the Peace of Aix-la-Chapelle in 1748. During the early 1750's merchants paid up to twenty shillings per hundred pounds, even though Virginia had been exporting from 38,000,000 to 53,000,000 pounds annually. During the French and Indian War the belligerents agreed to continue the tobacco trade, but in spite of this arrangement there were unusual price fluctuations owing primarily to inflation and occasional poor crops. In 1755 a period of inflation was created when Virginia resorted to the printing press for currency. At the same time war operations hampered production and only about one-half of the usual annual crop was produced, and tobacco prices rose to twenty shillings per hundred weight. During the years of peace just prior to the American Revolution, tobacco averaged about three pence per pound and never fell below two pence. With the outbreak of hostilities the General Assembly prohibited the exportation of tobacco to the British Empire. Frequent overproduction and the numerous wars during the eighteenth century seem to have caused more violent price fluctuations than those of the previous century. Although the American colonies did not participate in all of the wars involving England, all of them had their effects upon the colonies. Virginia depended primarily upon England to transport her tobacco crop and during the war years there was a frequent shortage of ships used for the tobacco trade. As this cut off the tobacco supply to the foreign markets, many of them began to grow their supply of tobacco.