It was claimed 2 to 3 times a week and always when the wife was away.  She had a job that she left very early in the morning and that was when most of them happened.  He was not charged with 500-750 counts.  If I remember the actual numbers correctly, it was 20 or 25 counts of actual rape and then there were the charges of rape against a minor, and 20-25 counts of another sexual assault.  There were counts of attempting to dissuade a witness.  He was actually charged with 94 counts.  he was found guilty of 76 counts, not guilty on 13, and hung on 5.  Basically, the way they were done, he was charged with the same set of crimes per time frame (3-6 months).  In the end, we believed that it was possible for him to rape her 4-5 times a year for 5 years.