The pack of largest economies is led by none other than US which has the GDP, based on purchasing power parity (ppp), of $14.66 trillion. China with the population of more than 1,339 million has the 2nd largest economy with the GDP of $10.09 trillion.
The shift in economic power will be seen by the year 2020. It is said that China would overtake USA and will be the new super power of 2020.
Japan which held the 2nd spot till China grabbed it has the GDP of $4.31 trillion and is in 3rd place now. India, the 2nd most populated country with the population 0f more than 1,210 million, has the 4th largest economy with GDP of 4.06 trillion.
USA may have the largest economy but the unemployment rate of 9.6% is more than that of China whose unemployment rate as of 2009 is 4.3%.