| Country | change (CH4 only) |
|---|---|
| United Kingdom | -58.0 |
| Germany | -56.0 |
| Bulgaria | -55.0 |
| Latvia | -55.0 |
| Romania | -48.0 |
| Lithuania | -47.0 |
| Estonia | -43.0 |
| Czech Republic | -43.0 |
| Netherlands | -41.0 |
| Austria | -35.0 |
| Belgium | -35.0 |
| Finland | -33.0 |
| Hungary | -33.0 |
| Sweden | -28.0 |
| Poland | -25.0 |
| Switzerland | -20.0 |
| Italy | -16.0 |
| Ireland | -15.0 |
| France | -13.0 |
| Norway | -13.0 |
| Denmark | -9.0 |
| Slovenia | -7.0 |
| Greece | -7.0 |
| Slovakia | -6.0 |
| Luxembourg | -5.0 |
| Croatia | 3.0 |
| Liechtenstein | 7.0 |
| Iceland | 9.0 |
| Portugal | 21.0 |
| Spain | 25.0 |
| Cyprus | 25.0 |
| Turkey | 73.0 |
| Malta | 84.0 |