20. The system of claim 19 , wherein the processor is further configured to: when the experience range is zero: set the term of experience to zero; and when the experience range is greater than zero: determine a start time for the experience range; determine an end time for the experience range; compute a time difference between the start time and the end time; and set the term of experience to the time difference.
23. The system of claim 20 , wherein the term of experience is not an integer.