Economic growth is the same as population growth. When the population increases consumption increase. Economic growth is increase in number of goods and services produced which leads to more consumption per person, which in most cases leads to greater use of natural resources per person. Hence countries in the West who have smaller populations consume much more than poorer countries with less economic development.
Most of those countries claiming to have replacement level fertility are still growing either through immigration or through economics. This is the case across the board... If they are not then they are considered in trouble as is the case with Japan.
Quite a few countries are under replacement fertility rate. China is below. India is almost there.