[SAA GunSlinger]

Is there statistic to know how many times the Thompson submachine gun was used in violent crimes during the roaring 20's? Im just trying to figure out was the tommy gun really used by gangsters of the era as much as Hollywood shows and I know the NFA 1934 act was passed because the amount of violent crime during prohibition but how much did the Thompson to attribute to that? If If i could find a way to look up statistics I could answer both my questions