Thanks Helen. The data that I needed was not there though because I used the wrong phrase so sorry for that. I said that the population was decreasing in the developed world, which is untrue because it doesn't allow for migration. I should have said that the birth rate was decreasing in the developed world, which is true. It has no relevance on the topic in question as far as I can see. If the birth rate is less than 2 per woman, which seems to be the case in the US (1.7 in 2019), then abortion will have no effect. I have always been pro choice and against the type of control that the fundamentalists in the US are now excercising. Limiting abortion as they are doing now is wrong, but it is also wrong to claim that it will have a major impact on world birth rates. It does the case against them no favours if your arguments are false.