In the 1990s, the county's areas of rapid growth shifted further south and west. Farm and pasturelands were developed as suburbs. The cities of West Jordan, South Jordan, Riverton, Herriman, and Draper are some of the fastest-growing cities in the state. During the 1990s, Salt Lake City gained population for the first time in 40 years. Salt Lake City's selection as the host of the 2002 Winter Olympics spurred a construction boom in the city that continued after the Olympics; slowing only in the 2008 recession. As the county's population has surpassed 1 million, a main issue it faces is urbanization. Only a few small rural areas remain in the far west of the valley. Other issues facing the county today include congested transportation and related air pollution.