That may be a meaningless "statistic." How many of those should have been executed? I continually seem to run across crime documentaries, FBI files, Cold cases, etc. There is an INCREDIBLE number of assholes who are serial killers, and who have victimized, assaulted, tortured, and killed, many times women. "Up here" in this area we have the jerk off Joseph Duncan, who got here BECAUSE SOME LIBERAL GOD DAMNED JUDGE let him out Look it up
And after the fact, he is suspected of others nobody seemed to realize "until later." Same thing with Gary Ridgsway, (Green River killer) with "The Spokane South Hill Rapist" Kevin Coe, and with Robert Lee Yates, who very likely killed some women in Germany when he was stationed there in the U.S. Military.