But, if there had been any improvement, you would say so. In fact, if the system had led to any improvements, you would not hesitate to say so.
However, you cannot say so. Since you have to look at the figures, that means that the improvement is not obvious. As a politician, that is what I have to conclude.
I understand your position and I don't want to embarrass you but since there is no evidence of improvement, you cannot tell me that the implementation of the system has been beneficial as far as safety is concerned. You are not able to draw that conclusion.