Passage: Hepburn appeared in fewer films as her life went on, devoting much of her later life to UNICEF. She had contributed to the organisation since 1954, then worked in some of the poorest communities of Africa, South America, and Asia between 1988 and 1992. She was awarded the Presidential Medal of Freedom in recognition of her work as a UNICEF Goodwill Ambassador in December 1992. A month later, Hepburn died of appendiceal cancer at her home in Switzerland at the age of 63.

Question: How old was Hepburn when she died?
63