From 0 to 8 none at all. We went to the neighbors to watch Capt. Kangaroo.
8 to 24 and married equaled 1. Later we got a larger screen for the living room and a small (almost invisible) one for the bedroom.
From age 25 til about 45 I spent more of the time explaining why the kids couldn't have their own. (Because I said so)
54 to present just 1 but it is a big mama jama.