| 1965 | 1998 | 2030 | |
|---|---|---|---|
| World | 74 | 78 | 90 |
| Developing countries | 28 | 45 | 66 |
| ① Near East & North Africa | 69 | 72 | 90 |
| ② Sub-Saharan Africa | 29 | 29 | 34 |
| ③ Latin America & Caribbean | 80 | 110 | 140 |
| ④ East Asia | 4 | 10 | 18 |
| ⑤ South Asia | 37 | 68 | 107 |
| Transition countries | 157 | 159 | 179 |
| Industrialized countries | 186 | 212 | 221 |