Now ShotOne, having got that far in your research, why didn't you ask why there are so many interceptions in French airspace?
Here are some suggestions:
ATC don't read full frequencies (e.g. 132.57 instead of 132.570 or 132.575 etc.) and often fail to check the readback to compound this;
Pilots who think it is funny to block 121.5 with idiotic broadcasts of animals and music thus, as in the UK, many pilots turn down/off 121.5 due to the distraction;