| Country | Year | Coveragee | Country | Year | Coveragee | Country | Year | Coveragee |
| Argentina | 1989 | 53.2% | India | 1990 | 10.6% | Senegal | 1990 | 6.9% |
| Bolivia | 1992 | 11.7% | Indonesia | 1991 | 10.7% | South Korea | 1991 | 30.0% |
| Brazil | 2004 | 49.7% | Jamaica | 1991 | 39.3% | Spain | 1992 | 85.3% |
| Burkina Faso | 1989 | 3.7% | Japan | 1989 | 100.0% | Sri Lanka | 1990 | 28.8% |
| Cameron | 1989 | 13.7% | Kenya | 1990 | 14.7% | Sweden | 1990 | 100.0% |
| Canada | 1989 | 97.4% | Malaysia | 1991 | 48.7% | Switzerland | 1992 | 97.4% |
| Chile | 1992 | 55.7% | México | 1990 | 37.9% | Taiwan | 1988 | 86.7% |
| Colombia | 1989 | 23.9% | Mozambique | 1986 | 0.2% | Tanzania | 1990 | 5.1% |
| Costa Rica | 1993 | 54.2% | Niger | 1990 | 2.8% | Turkey | 1990 | 34.6% |
| Denmark | 1990 | 100.0% | Nigeria | 1990 | 2.4% | United Kingdom | 1990 | 94.2% |
| Dominican Republic | 1988 | 11.5% | Pakistan | 1989 | 3.5% | Uruguay | 1989 | 68.8% |
| Ecuador | 1989 | 37.8% | Panamá | 1990 | 39.6% | USA | 1989 | 96.9% |
| Egypt | 1989 | 62.3% | Peru | 1992 | 25.7% | Venezuela | 1990 | 34.3% |
| Ghana | 1989 | 13.3% | Philippines | 1990 | 19.1% | Zambia | 1989 | 13.8% |
| Honduras | 1990 | 18.7% | Ruanda | 1989 | 9.3% |