Please do not worry about the population. Human population has far over-shot the ability of Planet Earth to provide for us. The population must, and will come down and eventually find a level that is sustainable. I don't know what that number is, much depends on the lifestyle that humans lead in the future, but I will be surprised if the sustainable number of humans is much above 2 billion people. So celebrate when countries exhibit population declines, particularly when they do so without tragedy and pain.