Editing Dependency ratio (section)

== Total dependency ratio by regions ==
===Projections===
Below is a table constructed from data provided by the UN Population Division.<ref>{{Cite web|url=https://esa.un.org/unpd/wpp/Download/Standard/Population/|title=United Nations Population Division, World Population Prospects 2017, File Name: Total Dependency Ratio 1}}</ref>  It shows a historical ratio for the regions shown for the period 1950 - 2010.  Columns to the right show projections of the ratio.  Each number in the table shows the total number of dependents (people aged 0–14 plus people aged over 65) per hundred people in the workforce (number of people aged 15–64). The number can also be expressed as a percent.  So, the total dependency ratio for the world in 1950 was 64.8% of the workforce.
{| class="wikitable"
|+
!Region
!1950
!1970
!1990
!2010
!2030
!2050
!2070
!2090
|-
|World
|64.8
|74.9
|64.0
|52.5
|54.7
|59.1
|62.3
|65.7
|-
|Africa
|80.5
|90.1
|91.6
|81.2
|67.7
|61.5
|55.8
|55.7
|-
|Asia
|67.9
|79.5
|63.3
|48.0
|50.6
|55.8
|63.0
|69.9
|-
|Europe
|52.2
|55.6
|49.7
|46.6
|64.7
|74.9
|75.6
|80.6
|-
|Latin America & The Caribbean
|78.0
|86.7
|69.8
|52.4
|50.2
|57.3
|70.7
|80.4
|-
|North America
|54.4
|61.7
|51.7
|49.0
|64.8
|65.2
|72.3
|76.2
|-
|Oceania
|59.2
|65.8
|56.2
|53.4
|60.3
|61.8
|64.4
|69.5
|}
As of 2010, Japan and Europe had high aged dependency ratios (that is over 65 as % of workforce) compared to other parts of the world.<ref>{{Cite web|url=http://data.worldbank.org/indicator/SP.POP.DPND.OL/countries?display=map|title=Age dependency ratio, old (% of working-age population) &#124; Data}}</ref> In Europe 2010, for every adult aged 65 and older there are approximately four working age adults (15-64); This ratio (one:four, or 25%) is expected to decrease to one:two, or 50%, by 2050.<ref>{{cite journal | vauthors = Muszyńska MM, Rau R | title = The Old-Age Healthy Dependency Ratio in Europe | journal = Journal of Population Ageing | volume = 5 | issue = 3 | pages = 151–162 | date = September 2012 | pmid = 22924086 | pmc = 3412045 | doi = 10.1007/s12062-012-9068-6 }}</ref> An aging population is caused by a decline in fertility and longer life expectancy. The average life expectancy of males and females are expected to increase from 79 years in 1990 to 82 years in 2025.<ref>{{Cite web|url=https://www.nber.org/chapters/c8461.pdf|title=Population Aging and the Savings-Investment Balance in Japan}}</ref> The dependency amongst Japan residents aged 65 and older is expected to increase which will have a major impact on Japan's economy.