"Adopting a baby or toddler is much more difficult than it was a few decades ago. Of the nearly 4 million American children who are born each year, only about 18,000 are voluntarily relinquished for adoption. Though the statistics are unreliable, some estimates suggest that dozens of couples are now waiting to adopt each available baby."
https://www.theatlantic.com/politics/archive/2021/10/adopt-baby-cost-process-hard/620258/