According to the chart above, as of 2012 ever more people, especially in the developed world, are starting to believe that the China is the world’s leading economic power. In terms of nominal GDP, and even conventional measures of GDP (PPP), the Krauts are wrong at least for now. However, as per the chart below, China is fast overtaking the US on increasing numbers of metrics by physical volume – steel (1999), CO2 emissions (2006), exports (2007), and manufacturing output, energy consumption, and car sales (2010). Indeed, according to Arvind Subramanian, in PPP terms China already overtook the US back in 2010, and I think this is plausible given that it ties in perfectly with China overtaking the US in so many key categories in that year. Regardless, by 2015 it will become increasingly hard to deny that China has the bigger economy in PPP terms, and soon after in nominal terms too as the yuan massively appreciates against an increasingly devalued dollar.