Cameroonians outside Cameroon

How many Cameroonians live and work outside Cameroon such as in the United States of America, Germany, France, Britain, China, Japan, and what have You? It is difficult to say, especially for people in Cameroon. What one can say with certainty is that there are thousands of Cameroonians in the United States of America alone.  Same hold true for Europe, Germany, and the other countries of the Western world. While some have decided to live there permanently, some are only working with hope of coming back home for good some day.  They are out for greener pastures. They want to make money.  They want to make as much money as they can. Some of them are studying.  At the end of their studies they hope to return to Cameroon to lend their own contribution to nation building.
Cameroonians in the United States of America as in other western countries are doing wonders back home.  They are contributing to the development of the country significantly. If Bamenda looks very different today, it is to a great degree thanks to them. At the same time, we are losing much by the fact that many of these fellows are outside there.  Many of them are our best brains. But instead of being at home to contribute to build the country they are in a different country building that country. We are told many of them shine where they work.  That could have been shining back at home.
Is it their fault that they are out there instead of being at home to build the motherland? Whose fault is it that many of the best minds of our country are outside in other countries building those countries and ours continues to lag behind?  It is true that those of us who are at home are doing the best we can to move our country forward, but it certainly would have been much better with many of these our big brains at home. It is, therefore, important for us to ask ourselves why our big brains rush away from home to other lands such as the United States of America?  What can we do to bring home these smart guys to put their big minds at the service of the Fatherland?