By 2030 we may have managed to eradicate being poor by the average definition two or three decades ago of the poorest 15 countries with available statistics updated by more or less reliable inflation and purchasing power numbers since then.... That's what happens when you have to change the method of calculating extreme poverty because your boss said it could be eradicated. For @BW.
[That said, should note that means in the last few years I've suggested (a) it may be possible to end extreme poverty defined as $1.25/day, which would be good; (b) that it wouldn't be good enough (c) if the SDGs are going to have the goal of ending extreme poverty we should fix the goal posts and (d) fixing the goalposts means that 'extreme poverty' will be increasingly removed from any country's actual definition of poverty...]