Annamaria Tuske is a statistician working on the India Desk. Mathilde Didier, Caio Guimaraes, Marie Rabate and Gen Tang are masters students at Paris ENSAE who prepared their thesis on this topic under Ms Sorsa's supervision. This working paper is based on material prepared for the 2014 OECD Economic Survey of India published in November 2014 under the authority of the Economic and Development Review Committee (EDRC).