According to official statistics, what percent of all crime committed annually is violent crime

The answer would be: 5-15 %
The number will be influenced on some factors such as:
- The average economic status in certain that area 
- The level of Gang-related activities in that certain area
- A number of police officers in that area
- A number of weapons (such as guns and hands grenade) available for sale in that certain area

The answer is society was a caste like system with poor whites at the bottom of the white social ladder.