17 May is marked as International Day Against Homophobia, Transphobia & Biphobia. The date was specifically chosen to commemorate the World Health Organization’s decision in 1990 to declassify homosexuality as a mental disorder. This Day aims to celebrate sexual and gender diversity, and campaign against the violence and discrimination experienced by LGBTI people internationally. There are over 70 countries in the world where same-sex relationships are illegal, and in around 10 of these countries the punishment could be death. It is estimated that 70% of the world's population live under laws and regulations that limit freedom of expression around sexual orientation and gender identity.