I do...
It's part of learning the game. It's nice to check after a game where your team repeatedly got caught out due to lack of vision and see that you're the only player on the team who dropped more than 2 wards in the entire game (so really nothing you could do about it individually). Or someone wants to queue with you again, maybe you should check out their warding.
I think it would be best to split it like so:
Total vision provided in enemy jungle: X minutes
Total vision provided in team jungle: Y minutes
Total vision provided in lanes/ own base: Z minutes
Total vision provided in enemy base (defined as past T2 turret): W minutes
Total vision time remaining destroyed by enemy team (excludes pinks): V minutes
Total vision provided by pink wards: U minutes
Pink wards placed: W
Pink wards destroyed: T
Total vision removed: S minutes (excludes pinks)
where pinks are obviously excluded in the destroyed factors as they'd have potentially unlimited time.
There are games where I have a single pink ward in a good spot for over 20 minutes... it'd be interesting to see the value I got out of certain wards (my last game on the rift I placed a pink ward in the bush near Baron around 5 minutes in and it was still there past 20 minutes, allowing me to safely roam from top to mid for kills on their mid laner every time I pushed my lane [I went 16/4/15 and got all of my early kills in the mid lane, none against my top opponent]).
)
and 
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and 
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wards as well)
