The population, foreign investment, and urban development in Phnom Penh grew dramatically during the 1990s and early-2000s. The rapid growth resulted in the city's infrastructure distinctly lacking (the drainage system is particularly notorious, and Phnom Penh frequently floods during the wet season), and a need for both residential and commercial spaces. The simultaneous demand for residential and commercial housing and the increase of international investment has led to the planning, if not construction, of several satellite cities. The largest of these cities are: Grand Phnom Penh International City, CamKo City, Diamond Island City, Boeung Kak Town, and Chruy Cangva City.