Gross Domestic Product is defined as the total production for the country. It is measured by including all the dollars spent to purchase products/services from all the various sellers of goods. The largest purchaser of products/services is consumers. Coming in behind consumers are businesses, remember they are buying goods too. This includes everything from office supplies to the raw materials to make the products the consumers ultimately purchase.
Exports are goods and services sold to foreign nations. Exports are combined with imports to form one of the four numerical values comprising gross domestic product.