How is international trade measured between nations?

"International trade improves relationships with friends and allies; helps ease tensions among nations; and—economically speaking—bolsters economies, raises people’s standard of living, provides jobs, and improves the quality of life. The value of international trade is over $16 trillion a year and growing. This section takes a look at some key measures of international trade: exports and imports, the balance of trade, the balance of payments, and exchange rates. The developed nations (those with mature communication, financial, educational, and distribution systems) are the major players in international trade. They account for about 70 percent of the world’s exports and imports. Exports are goods and services made in one country and sold to others. Imports are goods and services that are bought from other countries. The United States is both the largest exporter and the largest importer in the world. Each year the United States exports more food, animal feed, and beverages than the year before. A third of U.S. farm acreage is devoted to crops for export. The United States is also a major exporter of engineering products and other high-tech goods, such as computers and telecommunications equipment. For more than 60,000 U.S. companies (the majority of them small), international trade offers exciting and profitable opportunities. Among the largest U.S. exporters are Apple, General Motors Corp., Ford Motor Co., Procter & Gamble, and Cisco Systems. Despite our impressive list of resources and great variety of products, imports to the United States are also growing. Some of these imports are raw materials that we lack, such as manganese, cobalt, and bauxite, which are used to make airplane parts, exotic metals, and military hardware. More modern factories and lower labor costs in other countries make it cheaper to import industrial supplies, such as steel, and production equipment than to produce them at home. Most of Americans’ favorite hot beverages—coffee, tea, and cocoa—are imported. Lower manufacturing costs have resulted in huge increases in imports from China. The difference between the value of a country’s exports and the value of its imports during a specific time is the country’s balance of trade. A country that exports more than it imports is said to have a favorable balance of trade, called a trade surplus. A country that imports more than it exports is said to have an unfavorable balance of trade, or a trade deficit. When imports exceed exports, more money from trade flows out of the country than flows into it. Although U.S. exports have been booming, we still import more than we export. We have had an unfavorable balance of trade throughout the 1990s, 2000s and 2010s. In 2016, our exports totaled $2.2 trillion, yet our imports were $2.7 trillion. Thus, in 2016 the United States had a trade deficit of $500 billion. America’s exports continue to grow, but not as fast as our imports: The export of goods, such as computers, trucks, and airplanes, is very strong. The sector that is lagging in significant growth is the export of services. Although America exports many services—ranging from airline trips to education of foreign students to legal advice—part of the problem is due to piracy, which leads companies to restrict the distribution of their services to certain regions. The FBI estimates that the theft of intellectual property from products, books and movies, and pharmaceuticals totals in the billions every year. Another measure of international trade is called the balance of payments, which is a summary of a country’s international financial transactions showing the difference between the country’s total payments to and its total receipts from other countries. The balance of payments includes imports and exports, or balance of trade, long-term investments in overseas plants and equipment, government loans to and from other countries, gifts and foreign aid, military expenditures made in other countries, and money transfers in and out of foreign banks. From 1900 until 1970, the United States had a trade surplus, but in the other areas that make up the balance of payments, U.S. payments exceeded receipts, largely due to the large U.S. military presence abroad. Hence, almost every year since 1950, the United States has had an unfavorable balance of payments. And since 1970, both the balance of payments and the balance of trade have been unfavorable. What can a nation do to reduce an unfavorable balance of payments? It can foster exports, reduce its dependence on imports, decrease its military presence abroad, or reduce foreign investment. The U.S. balance of payments deficit was over $504 billion in 2016. The exchange rate is the price of one country’s currency in terms of another country’s currency. If a country’s currency appreciates, less of that country’s currency is needed to buy another country’s currency. If a country’s currency depreciates, more of that currency will be needed to buy another country’s currency."