World historical and predicted crude birth rates (1950–2050) UN, medium variant, 2008 rev.[84] Years CBR Years CBR 1950–1955 37.2 2000–2005 21.2 1955–1960 35.3 2005–2010 20.3 1960–1965 34.9 2010–2015 19.4 1965–1970 33.4 2015–2020 18.2 1970–1975 30.8 2020–2025 16.9 1975–1980 28.4 2025–2030 15.8 1980–1985 27.9 2030–2035 15.0 1985–1990 27.3 2035–2040 14.5 1990–1995 24.7 2040–2045 14.0 1995–2000 22.5 2045–2050 13.4