20 98. To strengthen the enjoyment of economic, social and cultural rights, additional approaches should be examined, such as a system of indicators to measure progress in the realization of the rights set forth in the International Covenant on Economic, Social and Cultural Rights. There must be a concerted effort to ensure recognition of economic, social and cultural rights at the national, regional and international levels. F. Follow-up to the World Conference on Human Rights 99. The World Conference on Human Rights on Human Rights recommends that the General Assembly, the Commission on Human Rights and other organs and agencies of the United Nations system related to human rights consider ways and means for the full implementation, without delay, of the recommendations contained in the present Declaration, including the possibility of proclaiming a United Nations decade for human rights. The World Conference on Human Rights further recommends that the Commission on Human Rights annually review the progress towards this end. 100. The World Conference on Human Rights requests the Secretary-General of the United Nations to invite on the occasion of the fiftieth anniversary of the Universal Declaration of Human Rights all States, all organs and agencies of the United Nations system related to human rights, to report to him on the progress made in the implementation of the present Declaration and to submit a report to the General Assembly at its fifty-third session, through the Commission on Human Rights and the Economic and Social Council. Likewise, regional and, as appropriate, national human rights institutions, as well as non-governmental organizations, may present their views to the Secretary-General on the progress made in the implementation of the present Declaration. Special attention should be paid to assessing the progress towards the goal of universal ratification of international human rights treaties and protocols adopted within the framework of the United Nations system.