US economy
The US economy is the largest in the world, in 2007, GDP accounted for a bit over 13 trillion. Services is the key sector of the economy, which makes up about 78% , industry about 20.5%, and agriculture 1%. US government uses taxes and credit control to regulate the economy and strive for economic growth. 
Japan
The Japanese economy is the second largest in the world. The wages in Tokyo are the highest in the world. Between the 1960s to the 1980s japan had economic growth rates of, 10%, 5% and 4%, and was known as the post-war miracle.
GDP (official exchange rate):
$5.049 trillion (2009 est.)
GDP – real growth rate:
- -5.7% (2009 est.)
- -0.7% (2008 est.)
- 2.3% (2007 est.)
GDP – per capita (PPP):
- $32,600 (2009 est.)
- $34,500 (2008 est.)
- $34,700 (2007 est.)
Inflation rate (consumer prices):
- -1.3% (2009 est.)
- 1.4% (2008 est.)
Population: 127,430,000 (2010 est.)
- Labor force: 65.93 million (2009 est.)
- Unemployment rate: 5.6% (2009 est.)
China
The Chinese economy is huge and is rapidly growing, in 30 years the Chinese economy has grown 10 times. Economists predict that China will become the largest economy some time during this century, and it will keep growing. However, the rural areas of China are still relatively poor, thus, the per capita income is 2,000 USD, which is low compared to the other major economies.
Problems and Issues 