这个是有已经算好的,大家一般是直接用
http://pwt.econ.upenn.edu/Downlo ... 11302012version.zip
The Penn World Table(PWT) provides purchasing power parity and national income accounts converted to international prices for 189 countries/territories for some or all of the years 1950-2010. The European Union or the OECD provide more detailed purchasing power and real product estimates for their countries and the World Bank makes current price estimates for most PWT countries at the GDP level.
具体算法应该有标准的,现在有2000年国际元和2005年国际元两种,具体的我没研究,希望对你有帮助。有帮助麻烦给点论坛币吧……