Note: this is subject to change if I'm corrected on it.

17 Weekends since start (2,550 XP)
6 of these weekends we had no game (-900XP)
I am granting XP for 2 of these weekends (+300XP) (updated given lost weeks)
There was one session you got extra XP (+50XP)

The Total gained XP should be: 2,000 XP, not including starting XP
If someone has a correction on number of weekends since start, and number missed. Do alert me so I can correct this.

Rule of thumb: for every 3 lost weekends, you'll get +150XP to make up for it.