<P> Some experts including analysts at Goldman Sachs who coined the term BRIC in reference to the growing economies of Brazil, Russia, India, and China for marketing purposes believe that Mexico is going to be the 5th or 6th biggest economy in the world by the year 2050, behind China, United States, India, Brazil, and possibly Russia . </P> <P> Mexico's monetary policy was revised following the 1994--95 financial crisis, when officials decided that maintaining general price stability was the best way to contribute to the sustained growth of employment and economic activity . As a result, Banco de México has as its primary objective maintaining stability in the purchasing power of the peso . It sets an inflation target, which requires it to establish corresponding quantitative targets for the growth of the monetary base and for the expansion of net domestic credit . </P> <P> The central bank also monitors the evolution of several economic indicators, such as the exchange rate, differences between observed and projected inflation, the results of surveys on the public and specialists' inflation expectations, revisions on collective employment contracts, producer prices, and the balances of the current and capital accounts . </P> <P> A debate continues over whether Mexico should switch to a US - style interest rate - targeting system . Government officials in favor of a change say that the new system would give them more control over interest rates, which are becoming more important as consumer credit levels rise . </P>

What is the major source of income for both mexico and venezuela