Nativity Coloring Pages Free Download can be downloaded by clicking on the right and select save to download. A birth number is a number that shows the number of babies born alive from every thousand residents in one year. Birth rates are said to be high if, above 30, birth rates are said to be moderate if between 20-30, and birth rates are said to be low if less than 20. For example, the country’s birth rate for 2013 is 25 per thousand inhabitants.