[gpm]

I wonder if they even do. I'm sure they could theoretically compute it... but is it something that is ever actually computed?

It seems sort of like asking a programmer how many instructions there are in a binary we maintain. We could find out if we decided it mattered.

[sweetjuly]

It's a one liner in Virtuoso (hard IPs aside). I doubt anyone memorized the exact number but it's definitely not some unknown or hard to figure out quantity.