Rationing 1947). Tea was still on ration until 1952. In 1953 rationing of sugar and eggs ended, and in 1954, all rationing finally ended when cheese and meats came off ration. Sugar was again rationed in 1974 after Caribbean producers began selling to the more lucrative United States market. Many centralized planned economies introduced a peacetime rationing system due to food shortages in the postwar period. North Korea and China did so in the 1970s and 1980s, Communist Romania during the 1980s, the Soviet Union in 1990–1991, and from 1962-present in Cuba. A good example of this system was Poland. In
Rationing in Cuba to return to the previous area for their supplies. Products distributed through the "libreta" mechanism are sold at subsidized prices, which have been kept more or less stable since its inception (the mean salary of a worker has varied very little since, as well). The "libreta" contains a page for every month, where the clerk marks what products were withdrawn, and in which quantities. Cubans are required to present the "libreta" each time they buy the rations. At its inception, the rationing system included not only food products, but industrial products as well. Along with the "libreta", a tear-off coupon