Thank you! Basically perfectly answered my question/s. So steric changes make up only 40%. Looking at the NASA website you linked, it's a bit hard to tell if increase in each type is linear or exponential. You mentioned that the current rate is accelerating, can you expand on this a little, and whether the acceleration is the same 60-40 percentages of steric vs volume, or if say the acceleration is more due to volume changes so you might expect that ratio to increase over time? (I think I'm articulating what I'm thinking)

Again thank you for your response!