How to calculate the average birth rate?

Birth rate = annual number of births/annual average number × 1000‰

The birth rate represents the ratio of the total number of people born in a certain region to the total average number of people in that region in that year.

According to the data of 20 18 released by the National Bureau of Statistics of China, the birth rate in 20 18 dropped to 10.94‰, while it was 12.43‰ in 20 17.

Extended data

Generally speaking, Africa, Southwest Asia and Latin America have the highest birth rates, with most countries >: 40 ‰; Followed by Southeast Asia and South Asia, the birth rate in these regions and countries is 20 ~ 29 ‰; Then Europe and North America, Russia and Australia, the birth rate is14 ‰ ~ 20 ‰; The lowest is China, Japan, South Korea and Singapore in East Asia, with birth rates below 1.3‰.

Taking the country as the unit, the birth rate is >; 50‰ of countries are concentrated in Africa, including Niger, Mauritania, Rwanda and Kenya. The countries with the lowest birth rate all appear in Europe. For example, the birth rate.

The above facts show that the high birth rate is concentrated in low latitudes, especially in tropical and subtropical regions; The low birth rate is concentrated in the middle and high latitudes. If we compare the distribution of birth rate and population density, we can see that the birth rate in western Europe and Japan with relatively high population density is relatively low; The birth rates in sparsely populated Africa, West Asia and Latin America are quite high.

Judging from the economic situation, countries and regions with relatively developed industries and high degree of urbanization, such as Western Europe, North America and Japan, have relatively low birth rates. In developing countries and regions in Africa, West Asia and Latin America, the corresponding industries are relatively backward, the agricultural economy is backward, the degree of urbanization is not high, and the birth rate is high, ranking first in the world.

It can be said that the birth rate has become an indicator related to the degree of economic development. The birth rate in developing countries is too high and there are too many new students, which affects the economic development and the improvement of living standards, and even widens the gap with developed countries.

Baidu encyclopedia-birth rate