Water productivity is calculated as GDP in constant prices of 2010 divided by annual total water withdrawal.
| 1990 | 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cameroon | 38.7 | 17.8 | 19.8 | 23.3 | 24.1 | 25.2 | 26.5 | 28.0 | 29.6 | 30.9 | 32.0 | 33.3 | 34.5 | 34.5 | 35.7 |
| Central African Republic | 49.4 | 25.3 | 25.3 | 32.2 | 33.5 | 35.2 | 22.4 | 22.4 | 23.4 | 24.5 | 25.6 | 26.6 | 27.4 | 27.7 | 27.9 |
| Chad | 11.3 | 5.8 | 11.1 | 13.4 | 14.0 | 15.3 | 15.7 | 16.0 | 16.6 | 15.9 | 15.6 | 16.5 | 17.4 | 17.3 | 17.4 |
| Congo | 136.6 | 143.4 | 172.0 | 226.2 | 231.2 | 254.2 | 252.4 | 269.2 | 270.3 | 246.8 | 233.0 | 227.7 | 230.2 | 215.8 | 218.0 |
| Equatorial Guinea | 14.8 | 155.2 | 488.6 | 659.7 | 702.7 | 761.1 | 729.7 | 732.7 | 665.9 | 607.2 | 572.8 | 537.1 | 507.6 | 483.3 | 487.5 |
| Gabon | 111.2 | 80.5 | 75.0 | 80.1 | 85.8 | 90.3 | 95.4 | 99.5 | 103.4 | 105.6 | 106.1 | 107.0 | 111.1 | 109.1 | 110.7 |