Prehospital 12-lead EKG frequency

Thanks for answering two questions about how frequently paramedics in your organization capture as 12-lead EKG. 
- The EMS1 team
1.What percentage of your department's patients with non-traumatic chest pain get a 12-lead EKG in the field?
2.Is there a tactic you have successfully used to increase 12-lead EKG frequency for patients with non-traumatic chest pain?