The quality of education for citizens in a country has a large effect on GDP, which affects the income per capita. Countries that increase the quality and availability of education can increase their national economic production. For example, when a country has a larger population of engineers designing new products for sale in the technology market, that country's national production output is greater than a country that relies mainly on rural agriculture and construction. Highly educated populations contribute more to their economy, driving GDP and increasing income per capita.Part of the GDP for a country is calculated by adding the total exports for the year. All products that a country produces for sale to other countries are considered exports.Increasing the number of exports directly increases income per capita.