See attached download. The NFPA has great summary report called "Occupational Injuries From Electrical Shock and Arc Flash Events".
From the foreword:
The goal of this project is to gather information on occupational injuries from electric shock and arc flash events through a review of literature, electrical incident data, and similar sources. This will include pertinent information such as the nature of the incident, adherence to safety requirements, use of appropriate PPE, and extent of injury.