I doubt the "every one" part too, but you'll never know the size of the problem if you're just counting convictions for perjury.  
Technically anyone can Ask a DA to file charges, but in reality it won't get done unless AST files the request.  And the Troopers don't request charges against fellow troopers, not for perjury - 
I've heard Judges read troopers [and other LEOs] out, from the Bench, for clearly and obviously having lied under oath, but I've never know the DA to file charges against an LEO for perjury.