!!!Did you know this about Niger? Did you know that Niger is among the top 10 of the 193 UN countries in the following 5 respects. #Age Structure: 0-14 years - %: 49.8 (Rank 1). #Birth rate - births/1,000 population: 46.12 (Rank 1). #Total fertility rate - children born/woman: 6.89 (Rank 1). #Population growth rate - %: 3.28 (Rank 7). #Infant mortality rate - deaths/1,000 live births: 86.27 (Rank 7).