More than nine billion people on Earth in 2050
The world population is expected to increase by 2,6 billion over the next 45 years, from 6,5 billion this year to 9,1 billion in 2050, according to a UN report released on Thursday.
Most of the increase will take place in the least developed countries, whose population will increase from 5,3 billion today to 7,8 billion in 2050, while that of the most developed countries will remain stable at 1,2, XNUMX billion.
This report, from the United Nations Department of Economic and Social Affairs, contains the latest update, carried out in 2004, of figures on the world population. The UN undertakes these updates every two years.
According to the document, the population of the planet will reach the threshold of 6,5 billion next July, an increase of 380 million souls since 2000, that is to say an annual average increase of 76 million.
Despite a projected decline in the average fertility rate - from 2,65 children per woman today to 2,05 in 2050 - the world's population is still expected to grow by around 34 million people a year by the middle of the century.
The population is expected to double in the 50 least developed countries in the world, from 0,8 billion in 2005 to 1,7 billion in 2050. It is even expected to triple in countries such as Afghanistan, Burkina Faso, Burundi, two Congo, Guinea-Bissau, Liberia, Mali, Niger, Uganda, Chad and Timor-Leste.
In contrast, the population of 51 countries or regions, such as Germany, Italy, Japan and most of the former USSR states, is expected to decline between 2005 and 2050.
In the next 45 years, nine countries alone are expected to account for more than half of the projected global population increase: India, Pakistan, Nigeria, DR Congo, Bangladesh, Uganda, United States, Ethiopia and China, cited in the decreasing order of their contribution to the overall rise.
Average global life expectancy, which increased from 46 years between 1950 and 1955 to 65 years between 2000 and 2005, is expected to further increase, reaching 75 years in 2050. In the most advanced countries, it is expected to increase from 75 years today to 82 years in the middle of the century.
In the least developed countries, on the other hand, this life expectancy, estimated today at a little less than 50 years, should increase to 66 years in 2050. The report stresses however that many countries belonging to this group being affected by the In the AIDS pandemic, the projected increase in life expectancy will depend on the implementation of effective programs to treat and prevent the disease.