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.
Sex-selective abortion
In 2017, according to CIA estimates, the countries with the highest birth sex ratio were Liechtenstein (125), Northern Mariana Islands (116), China (114), Armenia (112), Falkland Islands (112), India (112), Grenada (110), Hong Kong (110), Vietnam (110), Albania (109), Azerbaijan (109), San Marino (109), Isle of Man (108), Kosovo (108) and Macedonia (108). Also in 2017 the lowest ratio (ie. more girls born) was in Nauru at (0.83). There were ratios of 102 and below in several countries, most of them African countries or Black/African majority population Caribbean countries: Angola, Aruba, Barbados, Bermuda, Burkina Faso, Burundi, Cabo Verde, Cameroon, Cayman Islands, Central African Republic, Chad, Comoros, Republic of the Congo, Cote d'Ivoire, Djibouti, Eritrea, Eswatini, Ethiopia, Gabon, The Gambia, Ghana, Guinea-Bissau, Haiti, Kazakhstan, Leshoto, Liberia, Madagascar, Malawi, Mali, Mauritania, Mozambique, Niger, Puerto Rico, Qatar, Senegal, Sierra Leone, Somalia, South Africa, Togo, Uganda, Zambia.