my 20% number over the next 20 years brings us to 640k

in the year 2043.

20% is not crazy high pie in the sky number.


lets check 30%

Brings us to 230k by 2033

and 3.167 million in 2043


my guess is the range is 20% to 30%

My point is if you prep for that range  you can do some planning for that range.