Don't have a precise figure but you might find the following information from the American Academy of Forensic Sciences useful.
How Much Money Will I Make?
Income in the forensic sciences varies greatly depending upon your degree, your actual job, where you work, and how many hours you work. You may never "get rich" but you will have a good income. You will be satisfied with your job, knowing you are contributing to justice keeping the good guys on the street and helping put the bad guys in jail.
Forensic scientists work different hours, depending upon what they do. Some work in forensic laboratories and work 40 hours a week, Monday through Friday. Others work out in the field on digs and may work different hours. Still others are "on call" and work after their regular shift and receive overtime or compensatory (comp) time. Essentially every branch of forensic science offers opportunities for personal growth, career advancement, and increasing financial compensation.
