In the USA, the Baby Boom peaked in 1958 and was then followed by 19 years of decline in the birth rate, hitting bottom in 1977. Its the trough of the late 70s

In the USA, the Baby Boom peaked in 1958 and was then followed by 19 years of decline in the birth rate, hitting bottom in 1977. Its the trough of the late 70s and early 80s who are now in their 30s and having kids -- they can not drive a flight back to the suburbs exactly because they are from a trough: there are not many of them, relative to the demographics before them and after them.