new delhi, Nov. 7 -- Demonetisation, announced almost three years ago, on November 8, 2016, was primarily meant to purge unaccounted wealth in cash, but more than 99% of demonetised currency came back into the financial system. Now, three years later, data released recently by National Account Statistics (NAS) shows Indian households were quick to accumulate significantly more cash after demonetisation than they previously held. This was done most likely to compensate for the depletion of their cash holdings caused by demonetisation....