Commerce, services and tourism accounts for 57% of the state’s GDP, led by commerce at 19% and services at 18% both related and not to tourism. This is an increase from 45% in 1970. Since the 1990s, the state has promoted its tourism industry, with attendance at international forums, and building of hotels and other infrastructure. The Centro de Congresos (Convention Center) of Querétaro was inaugurated in 2011 to attract more business travel to the state. The facility contains ten halls, with a capacity of 9,000 people.