Initials (2016) | Amount × 106 | Initial value for | Source |
| 210 | N | worldmeters.com |
| 209 | S | worldmeters.com |
| 0.672 | I | Estimations [14] |
| 0.000067 | M | [14] |
| 0.00 | R | Assumptions |
| 10.0 |
| Estimations |
| 7.0 |
| Estimations |