In calculating the last column in Table 5, the following statistics have been used:
| Year | Suez Canal Dues (in million EP) |
| 1980/81 | 546.3 |
| 1981/82 | 636.2 |
| 1982/83 | 669.6 |
| 1983/84 | 681.8 |
| 1984/85 | 609.8 |
| 1985/86 | 719.8 |
| 1986/87 | 803.6 |
Source: National Bank of Egypt, Economic Bulletin, Vol. XXXX, No. 3 (Cairo 1987), p. 198. The last column is based on the percentages provided in Table 5, and the official accounting method at the time of equating the US dollar to 0.83 Egyptian pounds (EP).