Most likely it will be less this year I guess.
Don't forget since you're moving out.
You will not get any bonuses from the host, and in worst scenarion you are losing the host. Meaning more and more less bonuses for you, I think somehow birthday bonus is a fixed bonus.
But, since we are no longger active don't hope to much on those one.
Actually birthday bonus is a dynamic bonus, my host confirmed that. If you wagered a lot recently plus also lost quite a bit a bday bonus also includes some sort of "recent gameplay". That's my why bonus was smaller than the year before, even though I leveled up in between.
I know sooner or later I will lose my host but this doesn't happen until like October. And even if it happens getting it back is also not THAT hard actually.