It depends on the day of the week, as well as the time of year.
Right now my 12 yo is so busy with school, mowing yards and watering plants for the neighbors, orchestra rehearsal and baseball practice that he has little time for screens on weekdays. He might do a quick check of his facebook page in the evening while I'm getting dinner ready.
Weekends are definitely more relaxed. He plays an hour or so of video games on Friday or Saturday evening, and we are far more likely to watch sports (or something completely mindless) on tv or watch a movie.
My 17 year old has far too much in the way of school, homework and a daily job to have much time for anything other than texting.
When my boys were younger they were allowed an hour of video gaming on weekend days, but we had no set limits on tv.