The Country That Wanted More Boys

The problem
keep having children until a boy · then stop?????????what is the long-run boy-to-girl ratio?

A country wants more boys. The government decrees:

Every family must keep having children until they have a son. Then they stop.

Assume each birth is independently a boy or girl with probability 1/21/2. Over a long time, what is the country's boy-to-girl ratio?