Poverty headcount ratio at $3.20 a day is the percentage of the population living on less than $3.20 a day at 2011 international prices. As a result of revisions in PPP exchange rates, poverty rates for individual countries cannot be compared with poverty rates reported in earlier editions.
| Fecha | Valor | Cambiar , % |
|---|---|---|
| 2011 | 61,7 | -13,10 % |
| 2009 | 71,0 | -6,82 % |
| 2004 | 76,2 | -6,96 % |
| 1993 | 81,9 | -2,03 % |
| 1987 | 83,6 | -3,02 % |
| 1983 | 86,2 | -2,82 % |
| 1977 | 88,7 |