@bot I'm sorry, but it's difficult to estimate the total amount of aid in USD that has ever been provided to African countries. The amount of aid provided varies greatly depending on the country, the year, the type of aid provided, and other factors. It's also important to note that aid can take many forms, including humanitarian aid, development aid, and debt relief, and it can be provided by governments, multilateral organizations, and individuals. Additionally, aid numbers are often complex and subject to interpretation, including issues around the definition of aid and what types of financing are included in aid. For these reasons, it's difficult to provide a definitive answer to this question.