Collective farms were organized through the forcible consolidation of private holdings. Begun in 1946 against strong peasant resistance, collectivization did not assume major proportions until 1955 and was virtually completed only in 1968 with the consolidation of remote mountain villages. The basic features of the collective farm are: complete government control; collective use of the land and other principal means of production; obligatory common work by the members, based on established minimum work norms and enforced through economic and other sanctions; and distribution of the net income to members on the basis of the quantity and quality of work performed. With regard to income distribution, collective farm members are residual claimants entitled to share whatever remains after completion of compulsory deliveries to the state; provision of prescribed investment and operating funds for the farm; payment for irrigation water, machine-tractor station services, and other outstanding obligations; and setting aside 2 percent of the income for social assistance to members. Information on farm income levels is not available. Nominally, the General Assembly of all the members is the highest ruling organ of the collective farm, but actual control rests with the farm's basic Party organization (see ch. 6, Government Structure and Political System). An important feature of the state and collective farms is the small private plot allotted to a member family for its own personal use. Since 1967, when these allotments were reduced in size, the maximum legal size of the private plots, including the land under all farm buildings other than the family dwelling, has ranged from 1,000 to 1,500 square meters (about 10,750 to 16,150 square feet, or one-quarter to three-eighths of an acre), depending upon the location and availability of irrigation. The collective farm statute also entitles each family to maintain a few domestic animals privately. Only one cow or one pig is authorized, but up to ten or twenty sheep and goats may be allowed. In typical cases a family may have a cow or pig and a few sheep or goats. More liberal allowances for poor mountain farms may include both a cow and pig as well as the maximum number of sheep and goats.