Robust population data exist only for the last two or three centuries List of countries by population in 1939this is a list of countries by population in 1939 (including any dependent, occupied or colonized territories for empires), providing an approximate overview of the world population before world war ii Until the late 18th century, few governments had ever performed an accurate census.
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World population milestones went unnoticed until the 20th century, since there was no reliable data on global population dynamics
[2] the population of the world reached
High, medium, and low projections of the future human world population [1] in world demographics, the world population is the total number of humans currently alive It took around 300,000 years of human prehistory and history for the human population to reach a billion and only 218 more years to reach. Demographic history is the reconstructed record of human population in the past Given the lack of population records prior to the 1950s, there are many gaps in our record of demographic history
Historical demographers must make do with estimates, models and extrapolations For the demographic methodology, see historical demography Graph showing population by continent as a percentage of. However, world population growth is unevenly distributed, with the total fertility rate ranging from the world's lowest of 0.8 in south korea, [10] to the highest of 6.7 in niger
[11] the united nations estimated an annual population increase of 1.14% for the year of 2000
[12] the current world population growth is approximately 1.09% The world population increased from about 2.25 to 2.5 billion over the course of the decade, with about 850 million births and 600 million deaths in total.
