Defining Terms

Life expectancy: is how long someone is expected to live in a country. http://en.wikipedia.org/wiki/Life_expectancy
Crude birth rate: is how many people are expected to be born in a country a year.
http://en.wikipedia.org/wiki/Crude_birth_rate
Crude death rate: is the expected ammount of deaths in a country a year.
http://en.wikipedia.org/wiki/Crude_death_rate
RNI: is the crude birth rate of a country minus the crude death rate of a country.
http://en.wikipedia.org/wiki/Rate_of_natural_increase
TFR: is the average number of children that a woman will have over her lifetime.
http://en.wikipedia.org/wiki/Total_fertility_rate
Net migration rate: is the number of emigrants  in a country over a period of time.
http://en.wikipedia.org/wiki/Net_migration_rate
Population pyramid: shows the different age groups in a place.
http://en.wikipedia.org/wiki/Population_pyramid

Life expectancy in:
Japan: 82.12 years    3rd
France: 80.98 years   8th
Kenya: 57.86 years    189th
Cuba: 77.45 years    55th
United States: 78.11 years   49th
Afghanistan: 44.4 years   219th

Crude birth rate in:
Japan: 7.64 births/1,000 population  222nd
Kenya: 36.64 births/1,000 population  29th
Ethiopia: 43.66 births/1,000 population 7th
United States: 13.83 births/1,000 population  154th
Germany: 8.18 births/1,000 population 220th

Crude death rate in:
Afghanistan: 17.83 deaths/1,000 population 7th
Kenya: 9.72 deaths/1,000 population  67th
United States: 8.38 deaths/1,000 population  99th
Japan: 9.54 deaths/1,000 population   69th
Mexico: 4.8 deaths/1,000 population   192nd

TRF in:
Niger: 7.68 children born/woman  1st
Afghanistan: 5.5 children born/woman 13th
Japan: 1.2 children born/woman  218th
United States: 2.06 children born/woman  126th
Germany: 1.42 children born/woman  196th

Net migration rate in:
Mexico: -3.61 migrant(s)/1,000 population 153rd
United States: 4.32 migrant(s)/1,000 population  25th
United Arab Emirates: 22.98 migrant(s)/1,000 population  1st
Argentina: 0 migrant(s)/1,000 population  73rd
Saudi Arabia: -7.6 migrant(s)/1,000 population  171th
Uganda: -8.83 migrant(s)/1,000 population  173rd