| Country/project | Holland | France | Luxembourg | Sweden | Britain | |
| Holland | Correlation index | 1.0000 |
|
|
|
|
| Significance | 0.0000 |
|
|
|
| |
| France | Correlation index | 0.823** | 1.0000 |
|
|
|
| Significance | 0.0000 | 0.0000 |
|
|
| |
| Luxemburg | Correlation index | 0.3420 | −0.0590 | 1.0000 |
|
|
| Significance | 0.1060 | 0.4180 | 0.0000 |
|
| |
| Sweden | Correlation index | 0.3500 | −0.0330 | 0.840** | 1.0000 |
|
| Significance | 0.1000 | 0.4530 | 0.0000 | 0.0000 |
| |
| Britain | Correlation index | 0.2960 | −0.0970 | 0.911** | 0.735** | 1.0000 |
| Significance | 0.1420 | 0.3660 | 0.0000 | 0.0010 | 0.0000 | |