In the 1990s and 2000s, Dhaka experienced improved economic growth and the emergence of affluent business districts and satellite towns. Between 1990 and 2005, the city's population doubled from 6 million to 12 million. There has been increased foreign investment in the city, particularly in the financial and textile manufacturing sectors. But frequent hartals by political parties have greatly hampered the city's economy. The hartal rate has declined since 2014. In some years, the city experienced a widespread flash flood during the monsoon.