HEADLINES & GLOBAL NEWS By Jun 01, 2021 01:32 AM EDT (Photo : Getty Images/Natalie Behring-Chisholm) BEIJING, CHINA - JULY 7: Chinese cyclists ride down a busy central street July 7, 2003 in Beijing, China. In an effort to control the rapid growth of China's population, the government implemented a single-child policy in the 1970s, aiming to keep the population below 1.6 billion by 2050 with zero population growth. China now has nearly 1.3 billion people, making it the most populated country in the world. The United Nations Population Fund had declared July 11 World Population Day, focusing on the concerns of the nearly 3 billion people under the age of 25. China's ruling Communist Party will relax birth limitations to allow couples to have three children instead of two to stave off risks to its economy from a rapidly aging population. It follows census data that displayed China's working-age population diminished from the previous decade as the number of individuals older than 65 increased.