World Births vs Deaths
About This Chart
Data Visualization Method
- Data: The annual number of live births and deaths for the world as a whole, from the UN World Population Prospects 2024. Each value counts a single year. It is not a running total.
- Period and area: 1950–2100, world total. The data covers 151 consecutive years with no missing or duplicated years. Values for 1950–2023 are UN estimates. Values for 2024–2100 are UN projections under the Medium variant.
- Selection: Only the world total is used. The chart has no regional, national, sex or age breakdowns, and it leaves out the UN's other projection variants.
- Processing: Source values were converted from thousands to millions of people. No interpolation, moving average, smoothing or accumulation was applied. Natural change (births minus deaths) was checked against the source's own figure for all 151 years.
- Chart form: An animated line chart. Both series advance year by year, and each line's latest value is labeled at its end. Straight segments join each pair of annual points as a drawing convention. They are not estimates for dates between those points.
Creator's Note
This chart puts two annual counts on one timeline from 1950 to 2100: people born and people who died. Event annotations are left off on purpose, so the two lines can be read on their own terms. They show the long rise and plateau of births, short spikes in deaths, and the steady climb in deaths that the UN projection associates with an ageing population.
In the data, births peak at 146.1 million in 2012. Under the Medium variant, annual deaths first exceed births in 2084. The author reads that crossing less as a date to remember and more as a point where the projection's ageing becomes visible. What follows it is a question the two lines raise rather than answer.
Data Sources
- UN World Population Prospects 2024: official source of every birth and death value
- Demographic Indicators, Medium (CSV): raw file used for births, deaths and years
- WPP 2024 Methodology Report: how the UN builds its estimates and projections
- WPP 2024 Summary of Results: the UN's own overview of the projections
- CC BY 3.0 IGO: license under which the data is shared and adapted
United Nations, Department of Economic and Social Affairs, Population Division (2024). World Population Prospects 2024, Online Edition. Unit conversion and visualization by the chart author.
Limitations
Everything from 2024 onward is a projection, not an observation. The chart shows one scenario, the UN Medium variant, without its uncertainty range or alternative variants. The line style does not change where estimates end and projections begin, so any value after 2023 should be read as projected.
The 1950–2023 values are not raw counts either. They are modeled UN estimates, and the UN revises them from one edition to the next. They may differ from national civil registration figures or from later WPP releases.
The animation speed is a presentation choice. It does not reflect the pace of real demographic change. The circles at the line ends mark position only, and their size does not encode any value.
What This Chart Doesn't Show
Both lines are absolute counts, not rates. A rising number of deaths does not mean that each person's risk of dying is rising. In a larger and older population, more deaths can occur even while life expectancy improves. The chart also does not show total population, age structure, fertility rates, migration or differences between countries.
The short spikes in deaths around 1960 and 2021 are part of the UN estimates. This series alone cannot establish their causes, and any attribution to specific events needs separate historical or epidemiological evidence.
The 2084 crossover is a scenario result, not a settled future. In the data, births exceed deaths by about 0.53 million in 2083, and deaths exceed births by about 0.40 million in 2084. The point where the drawn lines intersect between those years is an artifact of connecting annual values. It is not a dated event.