Mainland China's birthrate dropped to a record low in 2021, data showed on Monday, extending a downward trend that led Beijing last year to begin allowing couples to have up to three children.

China scrapped its decades-old one-child policy in 2016, replacing it with a two-child limit to try to avoid the economic risks from a rapidly aging population, but the high cost of urban living has deterred couples from having more children.

The 2021 rate of 7.52 births per 1,000 people was the lowest since 1949, when the National Statistics Bureau began collating the data, adding further pressure on officials to encourage more births.