| Currency | 2011-2014 | 2015-2018 | ||
| Number | Value | Number | Value | |
| US$ | 55 | 2752.8 | 97 | 3709.0 |
| EUR | 20 | 498.2 | 27 | 1587.2 |
| UA | 2 | 48.7 | 11 | 59.4 |
| ZAR | 2 | 82.6 | 7 | 490.6 |
| NGN | 2 | 15.8 | ||
| BWP | 1 | 55.6 | ||
| ZMW | 1 | 21.0 | ||
| Percentage of local currency | 2.5 | 2.4 | 7.5 | 9.8 |