Abuja countries relocated their embassies to Abuja, and many maintain their former embassies as consulates in Lagos, the commercial capital of Nigeria. Abuja is the headquarters of the Economic Community of West African States (ECOWAS) and the regional headquarters of OPEC. Abuja and the FCT have experienced huge population growth; it has been reported that some areas around Abuja have been growing at 20% to 30% per year. Squatter settlements and towns have spread rapidly in and outside the city limits. Tens of thousands of people have been evicted since former FCT minister Nasir Ahmad el-Rufai started a demolition campaign in
Abuja at least 35%, retaining its position as the fastest-growing city on the African continent and one of the fastest-growing in the world. Abuja has witnessed a huge influx of people into the city; the growth has led to the emergence of satellite towns, such as Karu Urban Area, Suleja, Gwagwalada, Lugbe, Kuje and smaller settlements towards which the planned city is sprawling. The urban agglomeration centred upon Abuja had a population estimated at 2,440,000 in 2014. The metropolitan area of Abuja was estimated in 2016 as six million persons, the country's second most populous metro area. The city has a