Well, you've been a member for almost 4 yrs. If you take 365 x 4 and then subtract 30 for the one month you are short of 4 yrs, that's 1430 days. 10,000 divided by 1430 is just a tick under 7. That's 7 rounds a day, every day, for 4 yrs.
It takes me almost an hour to play 18 holes by myself and about 30 mins for 9 holes. If it were me, and I played 3 rounds of 18 and 4 rounds of 9 holes every day, that's 5 hrs every day playing this game. 5 hrs times 1430 days is the equivalent of playing for 298 days, 24 hrs a day.
Your mileage may vary, of course.
It's a good thing that you spread that out over 4 yrs. I mean, you have to squeeze in a pint here and there (and time to squeeze one or two out, as well).
Cheers!