Hello99
I believe we are confusing two different types of growth rate. There is population growth rate (PGR) that is the growth in the overall population. This is what is referred to in the CIA statistics. This is calculated by taking the total population at the beginning of the period subtracting the population at the end of the period and dividing by the pop at the beginning.
The number relevant to us is not the population growth rate but the growth in the birth rate. this number is calculated by taking births from one year subtracting the previous years births and dividing by the previous years births. As I am sure you can imagine the second number will tend to be significantly higher than the first.