The data is up to 2010.
They have two methods for calculating China's PPP and have a result of 10.8 trillion or 11.7 trillion.
India's PPP GDP 2010 Penn World Tables 7.1 was 4.69 trillion while the IMF says 4.05 trillion. This was about 15.8% more than the IMF figure.
The IMF had estimated China's PPP GDP in 2010 at 10.1 trillion.
The Penn World statistics are a 7% or 15.8% increase over the IMF PPP values
Other economists calculate that China's IMF PPP GDP is underestimated by 70%.
The Penn World statistics would have the world achieving a total GDP PPP over $100 trillion in 2014. The IMF predicts this milestone will be achieved in 2016.
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