[guiraldelli]

I came here to ask the same thing. Taking in consideration they use the US$1.25/day measurement since 1981 [1], today this value should be US$3.28/day [2] (based on US inflation between 1981 and 2015).

Given that, I'd love to know the real value. Maybe it is still a positive perspective, but I think it'd be more realistic (or, at least, accurate). :-)

[1] http://iresearch.worldbank.org/PovcalNet/index.htm?1

[2] http://www.usinflationcalculator.com/

[ceras]

It's already inflation-adjusted.

[meow_mix]

Where did you find that out ceras?

[roymurdock]

Go to the site linked in the article: http://iresearch.worldbank.org/PovcalNet/index.htm?1

See column titled "Pov.line (PPP$/day)"

Click on column title to bring up this text: http://iresearch.worldbank.org/PovcalNet/Docs/dictionary.htm...

And there they give you the definition of PPP, aka purchasing power parity, and tell you they are using 2005 rates of consumption.