| Sources | 1970 | 1983 | % Increase | No of Increase |
| 1. Official Creditors | 32 | 221 | 590 | 7 |
| Multilateral | 7 | 80 | 1042 | 11 |
| Bilateral | 25 | 141 | 464 | 6 |
| World Bank | (2) | (37) | 1750 | 19 |
| 2. Commercial Banks | 20 | 335 | 1575 | 17 |
| 3. All sources | 63 | 644 | 922 | 10 |