Defence is now set to become one of Africa's biggest foreign currency earners of the future.

It is Greece's major foreign currency earner with 11 million people visiting every year.

Mineral exports remain the main foreign currency earner.

Tourism was also the country's biggest foreign currency earner and the single largest contributor to the GDP.

Last year, for the first time, petroleum exports edged out sugar as Cuba's leading hard currency earner.

Mineral exports, gold, agriculture, and tourism are the main foreign currency earners of Zimbabwe.

Tourism is a major foreign currency earner.

Copper, silver and gold are the nation's major currency earners.

And in 2006 tourism was the country's best hard currency earner, ahead of horticulture and tea.

Tourism in Bangladesh is a slowly developing foreign currency earner.