What is the birth rate in the world?

For this question, the CIA World Factbook will be used. According to a 2009 estimate, the number of the "birth rate in the world" shows to be 19.86/1,000 population. This is the crude birth rate: the average number of births a year during a year per 1,000 person in the population at midyear. The crude birth rate is used to indicate fertility, but keep in mind that it is affected by age, unlike the total fertility rate. The total fertility rate is 2.5 and measures the number of children that a woman has over the course of her life; it is synonymous to the crude birth rate in that is is a another way to measure birth rate.