Horn of Africa at the 2012 London Olympics. According to the IMF, in 2010 the Horn of Africa region had a total GDP (PPP) of $106.224 billion and nominal of $35.819 billion. Per capita, the GDP in 2010 was $1061 (PPP) and $358 (nominal). States of the region depend largely on a few key exports: Over 95% of cross-border trade within the region is unofficial and undocumented, carried out by pastoralists trading livestock. The unofficial trade of live cattle, camels, sheep and goats from Ethiopia sold to other countries in the Horn and the wider Eastern Africa region, including Somalia and Djibouti, generates
German horn players since about 1930 because of the increasing ubiquity of the German horn. Since that time, the true French horn's use has been confined mainly to France, and even in that country the German horn was already gaining favour with some French players as early as 1938. In the late seventeenth century, French makers became preeminent in the manufacture of hunting horns, and were credited with the creation of the now-familiar, circular "hoop" shape of the instrument. As a result, even in England these instruments were often referred to by their French names, "trompe de chasse" or "cor de chasse"