| Country/project | Holland | France | Luxembourg | Sweden | Britain | |
| Holland | Correlation index | 1.0000 |
|
|
|
|
| Significance | 0.0000 |
|
|
|
| |
| France | Correlation index | 0.771** | 1.0000 |
|
|
|
| Significance | 0.0000 | 1.0000 |
|
|
| |
| Luxembourg | Correlation index | 0.624** | 0.381** | 1.0000 |
|
|
| Significance | 0.0000 | 0.0060 | 0.0000 |
|
| |
| Sweden | Correlation index | 0.381** | 0.339* | 0.396** | 1.0000 |
|
| Significance | 0.0060 | 0.0140 | 0.0050 | 0.0000 |
| |
| Britain | Correlation index | 0.551** | 0.480** | 0.671** | 0.734** | 1.0000 |
| Significance | 0.0000 | 0.0010 | 0.0000 | 0.0000 | 0.0000 | |