The most important change that was introduced to the ICP since 1980 was the regionalisation of the ICP in 2005 which required linking of regional PPP to estimate global PPP.
32. Le principal changement apporté au PCI depuis 1980 est sa régionalisation, à l &apos; occasion du cycle de 2005, qui suppose de coupler les PPA régionales aux fins d &apos; obtenir les PPA mondiales.