Again not true.
Yes I know about the dubious analysis you are basing this on. Two things you should know about the institues survey. The results of that analysis conflict with all other economic data we have available. The methods they used to reach these conclusions are not available either. Immediate cause for a rational reader to raise an eyebrow in suspicion.
What the survey / analysis actually found was that the number of people living on less than x US dollars a day has increased. This arbitrarily pegs the dollar as the unit for determining poverty and ignores the fact that the exchange rate has changed radically in this time period. Now if the poor were buying bread in the US this would mean a lot more, but the fact is they are not. We don't know what else may be wrong about the survey as, like I said, they don't want to tell how it was done.
Lies, damn lies and statistics.
x = 1 IIRC. The fact that the number of people living on less than 1 USD a day has doubled is pretty damning. And the price of bread and other goods is affected by global commodity prices so the exchange rate does play a role in people's purchasing power.