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
World Trade Centre Abuja scheduled to open in 2016. The complex is being funded by private financial institutions, as well as private investors, costing about ₦200 billion. it is being developed by "First Intercontinental Properties Limited", a subsidiary of "The churchgate Group", a Nigerian real estate company, and the project was designed by Woods Bagot, WSP Consulting is the structural consultant, whilst Abuja Investments Company is also a partner. The WTC Abuja, when completed, will be the largest mixed-use development on the West African subcontinent. The development of World Trade Centre Abuja started in 2010, on a land size of over 6,000 hectares in