Gross domestic product (GDP) is one of the main indicators in examining the size of a country’s economy. Gross domestic product is the sum of the final value of goods and services produced in a country over a period of time, usually one year. In this index, you are involved in many economic variables, including consumption, investment, and the amount of exports and imports of a country, which makes it more credible. Each year, the International Monetary Fund and the United Nations each publish their own GDP figures. In the infographic below, you can see the size of the world economy based on GDP. This statistic belongs to 2018 and has been published by the United Nations.