 A system for collecting an annual "voluntary contribution" from the Tibetans in exile was introduced by the Central Tibetan Administration on 1 August 1972.On 3 March 2005 an updated Green Book format was launched by the CTA's Department of Finance; the document holders data are stored in a computer database that had been created in a project that had started two years previously.As of 2010, the CTA web site states that "Any Tibetan who has aged 6 or more is obligated to apply for Green Book and become a full-fledged member of the exile Tibetan community.