49d85a5b_North_Carolina_Crash_Data__Response
[Suggestion] You should be able to create tables that include multiple counties at teh same time without having to select and run a table for each county individually. So years X County essentially. [Response] 
There are two regional variables that subdivide counties into groups: NCDOT Division and Highway Patrol Area. Otherwise, the only current solution would be for you to add up the numbers from the individual counties
North Carolina Crash Data
Response