PwC also make comparisons using purchasing power parities - which take account of different price levels between countries.

If current trends continue, Indian per capita purchasing power parity will significantly increase from 4.7 to 6.1 percent of the world share by 2015.

It is the 4th largest economy of the world when accounting for purchasing power parity.

If purchasing power parity held exactly, then the real exchange rate would always equal one.

Heston is considered a leading world expert on international economic comparisons and purchasing power parity.

An example is a country's purchasing power parity.

This is known as the "purchasing power parity" theory.

At least now she had fire- power parity with the bad guys.

It is also the world's ninth largest economy and third largest in terms of purchasing power parity.

Data is given in terms of constant year-on-year prices, based on purchasing power parity.