The United States is still the biggest economy in the world. It is the biggest buyer of products and mainly services. It is the nirvana for any company that wants to become a real player in its industry.
To put this in context, China – the second largest economy – is about one third of the U.S. economy. The American economy is bigger than the GDP of the next three economies combined: China, Japan, and Germany.
The population of the United States corresponds to approximately 4 percent of the world population but it produces 26 percent of all the goods and services in the global economy. In 2010, the gross domestic product of the United States was US$14.6 trillion, which represents 24 percent of the total GDP of the world of $60.68 trillion, according to (source: WolframAlpha)