Ok, sure. I'm just using the #'s listed on the 2015-2019 Comparison page you referenced which shows "18 days / 2 weeks" for RoS. So on average (not counting Solo), RoS should have another 363 days of release left!
Force Awakens: 380 days / 54 weeks
Last Jedi: 382 days / 54 weeks
Solo: 221 days...