Tata is India's largest conglomerate, with revenues in 2005-06 of Rs 967,229 million (US $21.9 billion), the equivalent of about 2.8% of India's GDP, and a market capitalisation of US $57.6 billion now (only 28 of the 96 tata group companies are publicly listed). The Tata Group has operations in more than 40 countries across six continents and its companies export products and services to 140 nations. The group takes the name of its founder, Jamshedji Tata, a member of whose family has almost invariably been the chairman of the group. The current chairman of the Tata group is Ratan Tata, who took over from J. R. D. Tata in 1991. The Tata Group comprises 96 companies in seven business sectors. 65.8% of the ownership of Tata Group is held by the charitable trust of Tata.[1]