Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Community | Currency | Region | Target date | Notes |
| --- | --- | --- | --- | --- |
| Economic and Monetary Community of Central Africa (CEMAC) | Central African CFA franc | Africa |  | not yet functioning common market |
| West African Economic and Monetary Union (UEMOA) | West African CFA franc | Africa |  | not yet functioning common market |
| Gulf Cooperation Council (GCC) | Khaleeji | Middle East | 2013 | Possibly gold backed, but postponed due to the financial crisis. |
| East African Community (EAC) | East African shilling | Africa | 2015 | To be used by the future East African Federation |
| Caribbean Single Market and Economy (as part of the CARICOM) |  | Latin America\n/Caribbean | 2015 | To supplement the OECS Eastern Caribbean Currency Union |
| Southern African Customs Union (SACU) | South African Rand | Africa | 2015 | de facto for the CMA member when the SADC economic union is established |
| Southern African Development Community (SADC) | South African Rand\n(interim proposal) | Africa | 2016 | To supplement or succeed the CMA and Southern Africa Customs Union |
| South Asian Association for Regional Cooperation |  | South Asia | 2016[citation needed] |  |
| Union of South American Nations (UNASUR) | Latino | Latin America\n/Caribbean | 2019 |  |
| Economic Community of Central African States (ECCAS) |  | Africa |  | To supplement the Economic and Monetary Community of Central Africa (CEMAC) |
| Economic Community of West African States (ECOWAS) |  | Africa |  | To succeed UEMOA and WAMZ |
| African Economic Community |  | Africa | 2028 | See African Monetary Union |
| Union State of Russia and Belarus | Russian ruble | Europe |  |  |
| Arab League | Arab Dinar | Arab states |  | Arab Dinar has been proposed ever since the creation of the Arab Monetary Fund, expected for serious plans of doing so, after the creation of the proposed Arab Union. |
Question:
how many currency does the region of africa have
Answer:
4