<P> World population has experienced continuous growth since the end of the Great Famine of 1315 -- 17 and the Black Death in 1350 , when it was near 370 million . The highest population growth rates -- global population increases above 1.8 % per year -- occurred between 1955 - 1975 peaking to 2.06 % between 1965 - 1970 . The growth rate has declined to 1.18 % between 2010 - 2015 and is projected to decline to 0.13 % by the year 2100 . Total annual births were highest in the late 1980s at about 139 million , and are now expected to remain essentially constant at their 2011 level of 135 million , while deaths number 56 million per year and are expected to increase to 80 million per year by 2040 . World population reached 7 billion on October 31 , 2011 according to the United Nations Population Fund , and on March 12 , 2012 according to the United States Census Bureau . </P>
<P> World population has experienced continuous growth since the end of the Great Famine of 1315 -- 17 and the Black Death in 1350 , when it was near 370 million . The highest population growth rates -- global population increases above 1.8 % per year -- occurred between 1955 - 1975 peaking to 2.06 % between 1965 - 1970 . The growth rate has declined to 1.18 % between 2010 - 2015 and is projected to decline to 0.13 % by the year 2100 . Total annual births were highest in the late 1980s at about 139 million , and are now expected to remain essentially constant at their 2011 level of 135 million , while deaths number 56 million per year and are expected to increase to 80 million per year by 2040 . World population reached 7 billion on October 31 , 2011 according to the United Nations Population Fund , and on March 12 , 2012 according to the United States Census Bureau . </P>
when did the world population reached 7 billion
when did the world population reached 7 billion
on October 31 , 2011 according to the United Nations Population Fund , and on March 12 , 2012 according to the United States Census Bureau
on October 31 , 2011 according to the United Nations Population Fund , and on March 12 , 2012 according to the United States Census Bureau