And I frankly don't care to convince you of the fact. I'm not sure if anything you'd say could beat out my personal methodology on this particular question. I actually wave / say hi / talk to the grocery store clerks (and their managers) on a regular basis, so I've got people I trust who can tell me about rising (or not) shoplifting. I really don't need the internet to tell me this.
I literally can just ask the manager (and I recognize him by face since we talk so often) at the store next time I see them. I'm not sure if you'd care on their response or not, but... I'd trust him more than anything you'd say or research. No offense to you personally, but I have my methods to gathering information that I trust more.
There's much, much simpler, and direct, ways of getting information than surfing online for a database... or engaging on internet debates over.