Inflation continued to eat away at the cedi's value on the black market. In the early 1980s, the government started cracking down hard on the retail of products at prices other than the official established sale price (price controls). This had the effect of driving nearly all commerce underground, where black market prices for commodities were the norm, and nothing existed on store shelves. By 1983 the cedi was worth about 120 to one U.S. dollar on the black market, a pack of cigarettes cost about ₵150 (if they could be found), but the bank rate continued at ₵2.80 = $1.00. Finally, with foreign currency completely drying up for all import transactions, the government was forced to begin a process of gradual devaluation, and a liberalization of its strict price controls. This process ended in 1990 with a free float of the cedi against foreign currencies. Inflation continued (see exchange rate chart) until by July 2007, the cedi was worth about 9500 to one US dollar, and a transition to the third cedi was initiated.