PRB’s annual World Population Data Sheet projects that global population will reach 9.8 billion in 2050, which represents a 31% increase from the estimated 7.5 billion population in 2017. The 2017 version of the Data Sheet includes nine indicators regarding people aged 15 to 24.

Source: PRB’s 2017 World Population Data Sheet Focuses on Youth | IISD’s SDG Knowledge Hub | IISD