So, looking at stats for England and Wales about 80% of homicide incidents result in one or more suspects being charged and a small number of those end up being acquitted (though it often takes some time for people to be charged). I guess that counts as significantly fewer, but wasn’t the impression I got from my initial reading of your post.
80% of incidents, but each incident can have multiple victims. 2020 for example had one unfortunate case of 39 people being found dead in a truck relating to human trafficking.