A/HRC/31/3 Disappearance quadrupled, from 50 in 2014 to over 200 in 2015. The active use of treaty bodies by individuals alleging human rights violations is positive but needs to be matched with adequate resources to avoid long delays. OHCHR launched an online treaty body case law database (http://juris.ohchr.org/) and worked to ensure the webcasting of all treaty body sessions. 12. At their twenty-seventh annual meeting, held in Costa Rica, the Chairs of the treaty bodies formulated proposals for strengthened cooperation with the Inter-American Commission on Human Rights and welcomed the call by Costa Rica for an academic process of reflection on the future of the treaty body system. The Chairs also endorsed the Guidelines against Intimidation or Reprisals (the San José Guidelines) and recommended them for adoption by all treaty bodies, some of which have meanwhile done so. 13. OHCHR rolled out the treaty body capacity-building programme created through General Assembly resolution 68/268, with national-level activities in over 40 countries. A study and practical guide on national mechanisms for reporting and follow-up was developed. The first subregional training-of-trainers events for government officials took place for the Pacific (in Samoa) and the Caribbean and English-speaking Americas (in Barbados). 14. OHCHR celebrated the fiftieth anniversary of the International Convention on the Elimination of All Forms of Racial Discrimination and the twenty-fifth anniversary of the adoption of the International Convention on the Protection of the Rights of All Migrant Workers and Members of Their Families. The High Commissioner launched the year-long celebration of the fiftieth anniversary of the two covenants under the slogan “Our rights. Our freedoms. Always.” 2. Human Rights Council 15. In 2015, as mandated by the Human Rights Council, OHCHR continued to support three commissions of inquiry (on the Syrian Arab Republic, the Occupied Palestinian Territory and Eritrea) and conducted investigations and fact-finding missions on Sri Lanka, Iraq and Libya, as well as Boko Haram-related abuses, and carried out a human rights assessment mission to South Sudan. Despite operational challenges, the resulting reports represent independent, impartial and authoritative references. 16. OHCHR organized panel discussions, including on the death penalty, climate change, the effects of terrorism on the enjoyment of human rights and fundamental freedoms, unilateral coercive measures, the rights of the child, women’s rights, the right to education for every girl, racial discrimination worldwide, a human-rights approach to good governance and follow-up to the World Conference on Indigenous Peoples. The annual discussion on the integration of a gender perspective in the work of the Human Rights Council, in September 2015, focused on gender parity. For the first time, the impact of the world drug problem on human rights was the subject of a panel. OHCHR also organized a number of side events, for example on the application of human rights criteria to the Arms Trade Treaty. 17. The Human Rights Council held an enhanced interactive dialogue on the human rights of migrants and a dialogue on the status of negotiations on the post-2015 development agenda, and held informal conversations with the Deputy Secretary-General and the High Commissioner. 18. The Voluntary Technical Assistance Trust Fund to Support the Participation of Least Developed Countries and Small Island Developing States in the Work of the Human Rights Council covered the participation of 18 government officials in Council sessions. 3