A.D.2000

A.D.1000

A.D.1

1000B.C.

2000B.C.

3000B.C.

4000B.C.

5000B.C.

6000B.C.

7000B.C.

1+ million years

8

7

6

5

2

1

4

3

OldStoneAge New Stone Age

BronzeAge

IronAge

MiddleAges

ModernAge

Black Death —The Plague

9

10

11

12

A.D.3000

A.D.4000

A.D.5000

18001900

1950

1975

2000

2100

Future

Billions

Source: Population Reference Bureau; and United Nations, World Population Projections to 2100 (1998).

World Population Growth Through History

Ninth

Eighth

Seventh

Sixth

Fifth

Fourth

Third

Second

First Billion

Number of years to add each billion (year)

All of Human History (1800)

130 (1930)

30 (1960)

15 (1975)

12 (1987)

12 (1999)

14 (2011)

14 (2027)

21 (2050)

Sources: First and second billion: Population Reference Bureau. Third through ninth billion: United Nations, World Population Prospects: The 2004 Revision (medium scenario), 2005.

World Population Growth (Billions)

1.17

1.12

0.94

0.84

1.22

1.24

1.24

1.23

1.23

1.20

Belarus

Bulgaria

Republic of Moldova

Republic of Korea

Slovenia

Slovakia

Czech Republic

Ukraine

China, Hong Kong Special AdministrativeRegion

China, Macao Special Administrative Region

10 Places With the Lowest Total Fertility Worldwide

Average number of children per woman, 2000-2005

Source: United Nations, World Population Prospects: The 2004 Revision, 2005.

Rates of birth, death, and natural increase per 1,000 population

0

5

10

15

20

25

30

35

40

1950-1955

1955-1960

1960-1965

1965-1970

1970-1975

1975-1980

1980-1985

1985-1990

1990-1995

1995-2000

2000-2005

Birth rate Death rate

Natural Increase

Source: United Nations, World Population Prospects: The 2004 Revision, 2005.

Birth and Death Rates, Worldwide

• Birth rates and death rates are declining around the world. Overall economic development, public health programs, and improvements in food production and distribution, water, and sanitation have led to dramatic declines in death rates. And women now have fewer children than they did in the 1950s.

• Nevertheless, if death rates are lower than birth rates, populations will still grow

Notes on Birth and Death Rates, Worldwide

Life Expectancy at Birth, in Years

49

6772

76

6565

7780 82

75

Africa Asia Latin Americaand the

Caribbean

More DevelopedRegions

World

2000-2005 2045-2050

Source: United Nations, World Population Prospects: The 2004 Revision (medium scenario), 2005.

Trends in Life Expectancy, by Region

•In 2045-2050, infants born around the world can expect to live an average of 75 years — up ten years from today

• Africa will experience the largest increase in life expectancy: from 49 years to 65 years

• Life expectancy varies widely by region. In more developed countries, life expectancy averages 76 years, compared with only 49 years in Africa.

Notes on Trends in Life Expectancy, by Region

Millions

Source: United Nations, World Urbanization Prospects: The 2003 Revision (medium scenario), 2004.

1950 2000 2015

Largest Cities, Worldwide

811 12

17 18

34

2123

36

London Tokyo New York

Sao Paulo

MexicoCity

Tokyo Delhi Mumbai(Bombay)

Tokyo

•The largest cities in the world are growing rapidly, and they are shifting from the more developed regions to the less developed regions. In 1950 the three largest cities were in more developed countries; by 2000, only Tokyo remained in the top three.

• In 1950, New York was the largest city in the world, with a population of about 12 million. By 2015, the largest city worldwide is projected to be Tokyo, with triple this population size: 36 million.

Notes on Largest Cities Worldwide

http://www.census.gov/population/www/popclockus.html

• http://www.ibiblio.org/lunarbin/worldpop

• http://www.popco.org/irc/popclocks/