Personally I prefer to use the 30 million number because isn't it usually the case where someone who cycles very little, gets in the collisions?

The person who rides on the wrong side of the road, the person who blasts through intersections without looking for on-coming traffic, the one sprinting across lanes to get to the other side of the road, no lights at night - dressed all in black, the child riding unsupervised in traffic, the DUI, no-licence drunk trying to get home that don't put in very many miles or hours running into trouble?

They're one of the other 22.5 million and not one of the 7.5 million.