| 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 |
South Africa | 32.1 | 44.65 | 48.39 | 44.57 | 30.15 | 22.23 | 24.39 |
Angola | 24.92 | 33.56 | 31.97 | 31.11 | 16 | 13.97 | 20.7 |
Congo | 4.67 | 4.56 | 5.71 | 5.48 | 2.62 | 2.33 | 3.96 |
DR Congo | 3.16 | 3.53 | 2.75 | 2.81 | 2.63 | 2.08 | 3.29 |
Zambia | 2.78 | 2.69 | 3.05 | 3.06 | 1.79 | 2.18 | 3.12 |
Gabon | 0.58 | 0.62 | 0.9 | 1.61 | 1.1 | 1.44 | 2.29 |
Ghana | 0.36 | 0.64 | 1.2 | 1.45 | 1.3 | 1.31 | 1.85 |
Nigeria | 1.58 | 1.27 | 1.55 | 2.66 | 1.24 | 0.91 | 1.62 |
Equatorial Guinea | 1.67 | 1.82 | 2.47 | 3.22 | 1.17 | 0.63 | 1.48 |
Libya | 2.06 | 6.38 | 2.04 | 0.73 | 0.95 | 0.35 | 1.36 |