Yes, I've been playing around on the FBI's website. I'm that big of a geek, and have a decent amount of time on my hands. No, I don't live in my parent's basement.
The link below lists what's used (and the percentages) for murders in the USA. Remember this information when the MSM is telling us what a scourge upon society "Assault Weapons" are.
Expanded Homicide Data Table 8