Birth rate
As of 2017, Niger has the highest birth rate in the world with 49.443 per thousand people. 
Japan has one of the lowest birth rates in the world with 8 per thousand people.
While in Japan there are 126 million people and in Niger 21 million, both countries had around 1 million babies born in 2016.
Albania
The population of Albania, as defined by Institute of Statistics, was estimated in 2016 to be approximately 2,886,026. The country's total fertility rate of 1.51 children born per woman is one of the lowest in the world. Its population density stands at 259 inhabitants per square kilometre. The overall life expectancy at birth is 78.5 years; 75.8 years for males and 81.4 years for females. The country is the 8th most populous country in the Balkans and ranks as the 137th most populous country in the world. The population of the country rose steadily from 2,5 million in 1979 until 1989, when it peaked at 3.1 million. It is forecasted that the population should not reach its peak number of 1989 until 2031, depending on the actual birth rate and the level of net migration.