Tanzania | Life expectancy at birth, total (years)

Life expectancy at birth indicates the number of years a newborn infant would live if prevailing patterns of mortality at the time of its birth were to stay the same throughout its life. Development relevance: Mortality rates for different age groups (infants, children, and adults) and overall mortality indicators (life expectancy at birth or survival to a given age) are important indicators of health status in a country. Because data on the incidence and prevalence of diseases are frequently unavailable, mortality rates are often used to identify vulnerable populations. And they are among the indicators most frequently used to compare socioeconomic development across countries. Limitations and exceptions: Annual data series from United Nations Population Division's World Population Prospects are interpolated data from 5-year period data. Therefore they may not reflect real events as much as observed data. Statistical concept and methodology: Life expectancy at birth used here is the average number of years a newborn is expected to live if mortality patterns at the time of its birth remain constant in the future. It reflects the overall mortality level of a population, and summarizes the mortality pattern that prevails across all age groups in a given year. It is calculated in a period life table which provides a snapshot of a population's mortality pattern at a given time. It therefore does not reflect the mortality pattern that a person actually experiences during his/her life, which can be calculated in a cohort life table. High mortality in young age groups significantly lowers the life expectancy at birth. But if a person survives his/her childhood of high mortality, he/she may live much longer. For example, in a population with a life expectancy at birth of 50, there may be few people dying at age 50. The life expectancy at birth may be low due to the high childhood mortality so that once a person survives his/her childhood, he/she may live much longer than 50 years.
Publisher
The World Bank
Origin
United Republic of Tanzania
Records
63
Source
Tanzania | Life expectancy at birth, total (years)
1960 42.937
1961 43.1
1962 43.285
1963 43.494
1964 43.747
1965 44.026
1966 44.381
1967 44.756
1968 45.366
1969 45.973
1970 46.45
1971 46.917
1972 47.324
1973 47.978
1974 48.306
1975 48.722
1976 49.236
1977 49.842
1978 50.321
1979 50.907
1980 51.201
1981 51.472
1982 51.528
1983 51.543
1984 51.546
1985 51.556
1986 51.672
1987 51.726
1988 51.843
1989 51.739
1990 51.485
1991 51.306
1992 50.989
1993 50.87
1994 50.797
1995 50.786
1996 50.744
1997 50.624
1998 50.914
1999 51.748
2000 52.362
2001 53.161
2002 53.863
2003 54.895
2004 55.596
2005 56.299
2006 56.911
2007 57.52
2008 58.086
2009 58.894
2010 60.105
2011 61.049
2012 62.03
2013 62.96
2014 63.873
2015 64.651
2016 65.386
2017 65.999
2018 66.535
2019 66.989
2020 66.408
2021 66.201
2022

Tanzania | Life expectancy at birth, total (years)

Life expectancy at birth indicates the number of years a newborn infant would live if prevailing patterns of mortality at the time of its birth were to stay the same throughout its life. Development relevance: Mortality rates for different age groups (infants, children, and adults) and overall mortality indicators (life expectancy at birth or survival to a given age) are important indicators of health status in a country. Because data on the incidence and prevalence of diseases are frequently unavailable, mortality rates are often used to identify vulnerable populations. And they are among the indicators most frequently used to compare socioeconomic development across countries. Limitations and exceptions: Annual data series from United Nations Population Division's World Population Prospects are interpolated data from 5-year period data. Therefore they may not reflect real events as much as observed data. Statistical concept and methodology: Life expectancy at birth used here is the average number of years a newborn is expected to live if mortality patterns at the time of its birth remain constant in the future. It reflects the overall mortality level of a population, and summarizes the mortality pattern that prevails across all age groups in a given year. It is calculated in a period life table which provides a snapshot of a population's mortality pattern at a given time. It therefore does not reflect the mortality pattern that a person actually experiences during his/her life, which can be calculated in a cohort life table. High mortality in young age groups significantly lowers the life expectancy at birth. But if a person survives his/her childhood of high mortality, he/she may live much longer. For example, in a population with a life expectancy at birth of 50, there may be few people dying at age 50. The life expectancy at birth may be low due to the high childhood mortality so that once a person survives his/her childhood, he/she may live much longer than 50 years.
Publisher
The World Bank
Origin
United Republic of Tanzania
Records
63
Source