- 52 - 259. At the same time, the Committee notes that a large number of individuals who were deported in different parts of the former USSR are returning to their places of origin in Ukraine and are seeking jobs and shelter. Solving these problems puts further strain on resources at the disposal of the Government and will demand special attention from the authorities. 260. Finally, it appears that the Government has been unable to establish mechanisms for comprehensive data collection. The Committee notes that the population data presented to it date back to a 1989 census and draws the attention of the Government to the fact that such outdated or insufficient data would not serve as a good basis for government policy. D. Principal subjects of concern 261. The Committee expresses its concern at the sharp decline of purchasing power of the great majority of the population and the subsequent deterioration of its standard of living due to the overall unfavourable evolution of the economic situation in Ukraine. 262. The Committee calls attention to the difficulties experienced by members of minority groups, including the Crimean Tatars, who were deported decades ago and are now returning to resettle in Ukraine on the land of their ancestors. The Committee considers that the failure to resolve the question of citizenship for the Crimean Tatars is not in conformity with the State party’s obligations under the Covenant. In particular, the Committee is concerned that the consequent exclusion of such persons from certain social indicators, such as those on employment and poverty, may deprive them of the full enjoyment of their economic, social and cultural rights. In this connection, it recalls the provisions of article 2 of the Covenant, which states that the rights enunciated in the Covenant must be exercised without discrimination of any kind as to, inter alia, national or social origin. 263. The Committee expresses grave concern at the lack of practical measures aimed at creating adequate working conditions for women and at eliminating discrimination against them. The Committee is concerned about the possible discriminatory effects of imposing different retirement ages for men and women, particularly in market economies where one’s standard of living and professional fulfilment depend largely on one’s employment. In this light, the current national debate in which the maintenance of varying retirement ages is contemplated is a subject of concern. The Committee is concerned at the violence perpetrated against women, the generally low professional qualifications of women and their consequently high representation among low-paid workers and the unemployed. In this connection, it considers that the Government and the authorities as a whole have not made all necessary efforts to understand and face the phenomenon of discrimination, by collecting and analysing relevant data, by trying to eliminate the phenomenon through legislative measures and education, and by providing protection to victims of discrimination and violence against women. 264. The Committee is concerned at the excessive number of industries and other employment activities in which organization of trade unions is prohibited. Workers in civil aviation, communications and other sectors are subject to such prohibition. In this connection, the Committee takes note of