| 7.3.6. Methan (CH4) emissions (g/inhabitant) | ||||||
| 1995 | 1999 | 2000 | 2001 | 2002 | 2003 | |
| Individual road passenger transport | 148 | 136 | 120 | 110 | 102 | 103 |
| Public road passenger transport | 5 | 6 | 7 | 8 | 8 | 10 |
| Road freight transport | 24 | 35 | 36 | 39 | 42 | 38 |
| Urban public transport | 3 | 5 | 6 | 7 | 7 | 7 |
| Rail transport - diesel traction | 6 | 5 | 4 | 5 | 4 | 5 |
| Waterway transport | 1 | 1 | 1 | 0 | 0 | 0 |
| Air transport | 13 | 13 | 13 | 13 | 14 | 16 |
| Transport total | 198 | 201 | 187 | 181 | 177 | 178 |
| Source: CDV | ||||||