The quality and precision of the estimates presented here depends on the type of methodology applied, but above all on the quality of the data, a factor which is beyond our control, and necessarily involves improving the information in the Provincial Yearbooks, because they are based on smaller samples and on data bases of inferior quality.

The national economy has a strong identity: the national frontiers are fixed, and cross-border flows (of people, goods, services and financial assets) are habitually measured or are even regulated. The regional economy is much more open: the regional/provincial borders vary from time to time, and the flows between regions/provinces are rarely regulated or measured. Even so, based on the available data and the criteria we have defined, it has been possible to present an estimate which. from our point of view, seems to reflect what is really happening in the Mozambican economy.