| Country/area | 1980-1985 | 2010-2015 | 2025-2030 | 2045-2050 |
| World | 3.60 | 2.50 | 2.37 | 2.24 |
| Algeria | 6.49 | 2.82 | 2.20 | 1.93 |
| Morocco | 5.40 | 2.78 | 2.27 | 1.96 |
| Tunisia | 4.92 | 2.02 | 1.79 | 1.76 |
| Egypt | 5.20 | 2.79 | 2.37 | 2.03 |
| Libya | 7.34 | 2.38 | 1.82 | 1.62 |
| Sudan | 6.63 | 4.46 | 3.55 | 2.81 |
| Jordan | 7.05 | 3.27 | 2.56 | 2.05 |
| Lebanon | 3.75 | 1.51 | 1.50 | 1.63 |
| Palestine | 7.05 | 4.05 | 3.21 | 2.57 |
| Iraq | 6.35 | 4.06 | 3.31 | 2.69 |
| Syria | 6.77 | 3.00 | 2.37 | 1.92 |
| Bahrain | 4.63 | 2.10 | 1.81 | 1.69 |
| Kuwait | 5.03 | 2.60 | 2.36 | 2.18 |
| Qatar | 5.45 | 2.05 | 1.75 | 1.67 |
| Saudi Arabia | 7.02 | 2.68 | 2.10 | 1.78 |
| U.A.E | 5.23 | 1.82 | 1.62 | 1.64 |
| Oman | 8.32 | 2.91 | 2.08 | 1.71 |
| Yemen | 9.23 | 4.15 | 2.82 | 2.03 |
| Comoros | 7.05 | 4.74 | 3.90 | 3.13 |
| Djibouti | 6.26 | 3.42 | 2.67 | 2.17 |
| Mauritania | 6.28 | 4.70 | 3.84 | 3.05 |
| Somalia | 7.07 | 6.61 | 5.13 | 3.63 |