Beginning in the late 20th century, the government launched numerous initiatives to diversify the country's economy in order to decrease its dependence on oil and gas resources. Doha International Airport was constructed in a bid to solidify the city's diversification into the tourism industry. This was replaced by Hamad International Airport in 2014. The new airport is almost twice the size of the former and features two of the longest runways in the world. Thirty-nine new hotels were under construction in the city in 2011.