Tourism involves traveling for recreational, leisure, family or business purposes for a limited time. It provides a significant source of income for many countries, accounting for 30% of the world's trade of services and contributing $2.2 trillion to global GDP and over 100 million jobs in 2013. Tourism boosts demand for goods and services, increasing consumption and GDP. Top countries for international tourism expenditures are China, Germany, the United States, the United Kingdom, and Russia.