How common is adoption of Asian children by American parents?

I haven't looked up data about this but I'm surprised by how often it is to see Asian children being adopted by American parents, oftentime non-Asian parents.

I saw Knock at the Cabin a couple of months ago and it features a gay White couple adopting a Chinese girl from China. I thought it's sweet and moved on. Then I saw two more recent comments in this sub claimed that they were adopted. It then occured to me I remember Abbey Posey from The Mitchells vs. the Machines was also (I'm assuming) Chinese adopted by Black parents.