FusionCharts.
| Country | 1960 | 1970 | 1980 | 1985 | 1990 | 1995 | 1996 |
| Iran | 1.07 | 3.83 | 1.66 | 2.25 | 3.09 | 3.64 | 3.69 |
| Iraq | 0.97 | 1.55 | 2.51 | 1.43 | 2.04 | 0.56 | 0.58 |
| Kuwait | 1.69 | 2.99 | 1.66 | 1.02 | 1.18 | 2.06 | 2.06 |
| Nigeria | 0.02 | 1.08 | 2.06 | 1.50 | 1.81 | 1.99 | 2.19 |
| Saudi Arabia | 1.31 | 3.80 | 9.90 | 3.39 | 6.41 | 8.23 | 8.22 |
| United Arab Emirates | 0.00 | 0.78 | 1.71 | 1.19 | 2.12 | 2.28 | 2.28 |
| Venezuela | 2.85 | 3.71 | 2.17 | 1.68 | 2.14 | 2.75 | 3.05 |
* Units are measured in millions
* Data source: "The New York Times ALMANAC - 1999"