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Our World in Data - Data Insights

Around 5% of electricity in the United States is used for data centers — far more than the global average China only just missed the income cutoff to become a high-income country this year In these nine African countries, average incomes have more than doubled since 1990 Five countries had more women than men in parliament in 2025 More Indians live in the Gulf states than in the US, UK, and Canada combined Money spent on building data centers in the US has grown 5-fold since late 2022 How often are people infected with malaria? Drowning is a common cause of death among children — the world has made progress, but more can be done Meat preferences vary a lot across different countries Thailand’s population may have already peaked Four developed countries met the UN’s target for foreign aid in 2025 Guyana’s oil-driven economy has seen the world’s fastest growth in GDP per capita in recent years Rich countries spend 60 times as much on healthcare per person as poor countries Air conditioning is almost universal in the US and Japan — but not elsewhere Road deaths in the United States have fallen much more slowly than in other rich countries 30% of the world’s CO₂ emissions have a carbon price Morocco now gets almost a quarter of its electricity from renewables, but still relies heavily on coal Cereal yields have increased in all regions, but Africa lags behind Half of Nigeria’s population lives in cities In the past, most people worked in agriculture; in today’s rich countries, only a small share do Most of the world’s fastest-growing megacities will soon be in Africa Three-quarters of eggs produced in the United Kingdom are free-range Global population growth peaked six decades ago Rich countries have ten times as many doctors per person as poor ones Nearly half of young children in Guatemala suffer from stunting Electric cars are taking off quickly in Latin America US and Chinese companies train almost all of the world’s most-used AI models Obesity rates in Pakistan have tripled in the last 20 years Europeans consume more milk and dairy products than in other regions A woman’s risk of dying in pregnancy or childbirth varies hugely by country
Fertility rates across many countries have converged, des...
Hannah Ritchie · 2026-07-16 · via Our World in Data - Data Insights
Slopegraph of total fertility rates where the chart compares 1993 and 2023 values for selected countries to illustrate convergence in fertility. Most countries show 2023 rates around 1.6 to 1.7 births per woman, down from 1993 values ranging from 1.8 to 3.8 births per woman. Source: Human Fertility Database (2025). License: CC BY.

In the thirty years since I was born, fertility rates in my country, the United Kingdom, have not changed much. In 1993, the fertility rate was 1.8 births per woman. Thirty years later, it had dropped only slightly, to 1.6 births.

Elsewhere, the change has been much more dramatic; fertility rates have dropped sharply and are now similar to those in the UK.

You can see this in the chart, which shows the change in fertility rates from 1993 (in blue) to 2023 (in red). In Qatar and Iran, rates dropped from almost 4 births per woman to 1.7.

Fertility rates have fallen a lot across Asia and South America, too — Malaysia and Colombia are two examples (my colleague Esteban previously wrote about the latter). This marks a much faster demographic transition than many countries experienced historically.

Convergence isn’t the whole story, though. Here, I’ve picked countries with fertility rates that are similar to the UK’s today. But some have fallen far below these levels: in Chile and Thailand, the fertility rate was 1.2 births per woman in 2023, and may have fallen even further.

Explore fertility rates across the world and over time

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