Liberia allows the use of two currencies for financial transactions: the Liberian dollar and the US dollar. For 40 years from 1944 it was not a problem because the Liberian dollar was on par with the US dollar. One Liberian dollar was equivalent to one US dollar. Then in 1983, military Head of State Samuel Doe introduced a Liberian five dollar coin, and that's when the Liberian dollar started depreciating. During the civil war paper currency was added to the mix, resulting in further depreciation.