The question I really want to make is if poverty is decreasing of increasing worldwide, but since I guess there is no way to objectively define poverty, that question doesn't fit in here. I was always suspicious that when they release the poverty statistics, they always release the extreme poverty figures and not the poverty figures. For example, recently I found people living under 10 dollars a day either was increasing or it's stagnant (green line, as if they weren't poors). So this leads me to believe poverty is conveniently defined as for showing "poverty is decreasing worldwide". That's why I would like to know if there is a way to figure out how many people leaves under 15 dollars (or any other figure between 10 to 15 dollars, if you like) which according to my country statistics for poverty it would be poverty. By seeing the green and blue lines in this graph the best guess is it's increasing, but I don't have data to sustain that assumption.
So the question is, how many people in the world were living below 15 dollars a day in the last decades?