DEFINITION:
The average number of years to be lived by a group of people born in the same year, if mortality at each age remains constant in the future. Life expectancy at birth is also a measure of overall quality of life in a country and summarizes the mortality at all ages. It can also be thought of as indicating the potential return on investment in human capital and is necessary for the calculation of various actuarial measures.
"Countries Compared by Health > Life expectancy at birth > Total population. International Statistics at NationMaster.com", CIA World Factbooks 18 December 2003 to 28 March 2011. Aggregates compiled by NationMaster. Retrieved from http://www.nationmaster.com/country-info/group-stats/Non--religious-countries/Health/Life-expectancy-at-birth/Total-population
"Countries Compared by Health > Life expectancy at birth > Total population. International Statistics at NationMaster.com, CIA World Factbooks 18 December 2003 to 28 March 2011. Aggregates compiled by NationMaster." 2003-2011. <http://www.nationmaster.com/country-info/group-stats/Non--religious-countries/Health/Life-expectancy-at-birth/Total-population>.
'Countries Compared by Health > Life expectancy at birth > Total population. International Statistics at NationMaster.com, CIA World Factbooks 18 December 2003 to 28 March 2011. Aggregates compiled by NationMaster.', <http://www.nationmaster.com/country-info/group-stats/Non--religious-countries/Health/Life-expectancy-at-birth/Total-population> [assessed 2003-2011]
"Countries Compared by Health > Life expectancy at birth > Total population. International Statistics at NationMaster.com", CIA World Factbooks 18 December 2003 to 28 March 2011. Aggregates compiled by NationMaster. [Internet]. 2003-2011. Avaliable from: <http://www.nationmaster.com/country-info/group-stats/Non--religious-countries/Health/Life-expectancy-at-birth/Total-population>.
"Countries Compared by Health > Life expectancy at birth > Total population. International Statistics at NationMaster.com", CIA World Factbooks 18 December 2003 to 28 March 2011. Aggregates compiled by NationMaster. Avaliable at: nationmaster.com. Assessed 2003-2011.
"Countries Compared by Health > Life expectancy at birth > Total population. International Statistics at NationMaster.com, CIA World Factbooks 18 December 2003 to 28 March 2011. Aggregates compiled by NationMaster.," http://www.nationmaster.com/country-info/group-stats/Non--religious-countries/Health/Life-expectancy-at-birth/Total-population (assessed 2003-2011)
"Countries Compared by Health > Life expectancy at birth > Total population. International Statistics at NationMaster.com", CIA World Factbooks 18 December 2003 to 28 March 2011. Aggregates compiled by NationMaster., http://www.nationmaster.com/country-info/group-stats/Non--religious-countries/Health/Life-expectancy-at-birth/Total-population (last visited 2003-2011)
"Countries Compared by Health > Life expectancy at birth > Total population. International Statistics at NationMaster.com", CIA World Factbooks 18 December 2003 to 28 March 2011. Aggregates compiled by NationMaster., http://www.nationmaster.com/country-info/group-stats/Non--religious-countries/Health/Life-expectancy-at-birth/Total-population (as of 2003-2011)
