Since I completely geeked out on my answer to the below anon ask I received at tumblr, I figured I may as well share it here too.
Hi! That’s a great question but I feel a little hesitant to give you an exact timeline without having done a ton more research. Also, I’m sorry I took a day to respond but I wanted a chance to think about the best answer and also to gather some of the different topics into one place.
Sorry this is the longest answer ever, especially considering it’s probably not the answer you were hoping to get 😦
The reason I can’t give a super succinct answer is there are actually a lot of background pieces to this topic.