Demographics of the world
According to the CIA - The World Factbook, the country with the highest birth rate currently is Niger at 51.26 births per 1000 people. The country with the lowest birth rate is Japan at 7.64 births per 1000 people. Hong Kong, a Special Administrative Region of China, is at 7.42 births per 1000 people. As compared to the 1950s, birth rate was at 36 births per 1000 in the 1950s, birth rate has declined by 16 births per 1000 people. In July 2011, the U.S. National Institutes of Health announced that the adolescent birth rate continues to decline.
Total fertility rate
The TFR of Singapore, Macau, Taiwan, Hong Kong and South Korea are the lowest in the world, with Singapore and Macau having a TFR below 1 in 2017. Japan too has a low TFR (1.45 in 2016). Singapore mitigates this through immigrant workers, but in Japan there is a serious demographic problem.