When born seven billionth inhabitant?

When born seven billionth inhabitant? It is interesting

The UN believes that on October 31 born 7 billion people on the planet. However, according to other sources, this event can happen in a year and in the next few years. This difference in the data due to the lack of precise calculations of mortality and birth rates. One thing is clear — the exact date of birth of the 7 billion people can not be predicted.

According to the Vienna Institute of Demography of the event will not happen before 2013, but it can also be stretched up to 2020. The main problem in the census, even in highly developed countries is 3% error calculation. Updating data is labor-intensive, especially in Africa.

If you take China, the preliminary data on the 1.2 per woman born child. But we should consider the fact that under the policy of "one family — one child" many millions of children remain unregistered. So, for every woman in China may account for 1.8 unborn child.

India's demographic future is more uncertain. The UN believes that the population will increase from 1.2 billion to 1.7 by 2050. In this case, the Vienna Institute predicts 1.4 billion.

May 3, 2011 the United Nations presented the results of long-term calculations of the world population, which is as follows:

1 year — 200 million

1000. — 275 million

1500. — 450 million

1650. — 500 million

1750. — 700 million

1804. — 1000000000

1850. — 1200000000

1900. — 1600000000

1927. — 2000000000

1950. — 2550000000

1955. — 2800000000

1960. — 3000000000

1965. — 3300000000

1970. — 3700000000

1975. — 4000000000

1980. — 4500000000

1985. — 4850000000

1990. — 5300000000

1995. — 5700000000

1999. — 6000000000

2006. — 6500000000

2009. — 6800000000

2011. — 7000000000

2025. — 8000000000

2043. — 9000000000

2083. — 10 billion

It is believed that since the emergence of Homo Sapiens on Earth lived about 106 billion people. Since the industrial revolution the population was growing at huge rates. If at the beginning of a new era of population growth was 0.05%, now the data is approximately 1.1%. In 60 years, the annual growth rate reached its maximum and 2.2%. Today there was a decline of population growth, which is projected in the near future.

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