epa06080614 A Chinese couple has their pre-wedding photos taken on a street in Beijing, China, 11 July 2017. The current world population of 7.6 billion is expected to reach 8.6 billion in 2030, 9.8 billion in 2050 and 11.2 billion in 2100, according to a United Nations report published on 21 June 2017. China with 1.4 billion inhabitants is the most populous country in the world. The United Nations Population Fund (UNFPA) celebrates World Population Day on 11 July, which highlights how family planning can empower people and help developing nations. EPA/ROMAN PILIPEY