Some interesting maths...
20 years * 365 days * 24 hours = 175200 total hours the server has been up (ish)
If you sum the total hours played column you get 2931571 hours. Avalon has provided roughly 3 million hours of entertainment to people!
Note: This number excludes the very long tail of trail accounts who never got past a few hours of gaming, but hey.
Now, divide total played by total hours of server uptime and you get something that resembles the average concurrent connections for paying players. (paying because we've already cut the long tail of non-paying trials.) Which is around 17.
Not that you can do much with that number.