NEW YORK – Who would have thought that six years after the global financial crisis, most advanced economies would still be swimming in an alphabet soup – ZIRP, QE, CE, FG, NDR, and U-FX Int – of unconventional monetary policies? No central bank had considered any of these measures (zero interest rate policy, quantitative easing, credit easing, forward guidance, negative deposit rate, and unlimited foreign exchange intervention, respectively) before 2008.