The Union Government has made "sustained efforts" to publicise Hindi and spent Rs43.48 crore over the past five years to propagate the language worldwide through diplomatic missions and posts, the External Affairs Ministry said on Thursday. Responding to a question in Rajya Sabha, Minister of State in the Ministry of External Affairs V Muraleedharan said the government has made sustained efforts for acceptance of Hindi as an official language of the United Nations and its propagation across the world.