United States Gdp
Throughout this article, the unqualified term "dollar" and the $ symbol refer to the US dollar.The economy of the United States is the world's largest single national economy. The United States' nominal GDP was estimated to be $16.8 trillion as of 2013, approximately a quarter of nominal global GDP. Its GDP at purchasing power parity is also the largest of any single country in the world, approximately a fifth of the global total. The United States has a mixed economy and has maintained a stable overall GDP growth rate, a moderate unemployment rate, and high levels of research and capital investment. Its five largest trading partners are Canada, China, Mexico, Japan, and Germany.