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.
Childbirth in Japan
Women's health related figures in Japan are inspiringly positive. Japan boasts one of the longest life expectancies for women in the world at 82.25 years. According to WHO statistics, life expectancy rate were 83 for both sexes and 86 for women in 2011. And the infant mortality rate is 2.78 deaths per 1,000 live births, one of the lowest in the world. Whether these two facts are related to a final figure, the 2011 estimate of fertility rate of just 1.21 children, is as yet undetermined. Infant mortality rate has decreased to 2.13 per 1,000 live births in 2014. Maternal mortality rate is 5 deaths per 100,000 live births, one of the lowest in the world