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Our World in Data - Data Insights

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 Tobacco use in India has halved this century The price of lighting has dropped over 99.9% since 1700 NVIDIA’s revenue from data centers and AI has grown 1,300-fold in the last 12 years Just over one-third of the world’s assessed fish stocks are overexploited Spain and Portugal both get over 40% of their electricity from solar and wind Where are more people dying than being born? What is the largest source of electricity in each country? Australia is replacing coal and gas power with solar and wind Less than 60% of the world has access to safe sanitation Lung cancer deaths trace the rise and fall of smoking Most collected waste in many low- and middle-income countries is stored in open dumps or is burned Coffee production has shifted toward Asia over the last six decades One in four cars sold in 2025 was electric One in four cars sold in 2025 was electric Global sales of combustion engine cars peaked in 2017 Global sales of combustion engine cars peaked in 2017 Tajikistan's remittances are worth nearly half the country’s GDP China added a Germany-sized electricity grid last year Japan closed nearly all of its nuclear plants after Fukushima, but some are coming back online Cereal yields in Ghana have increased much faster over the past decade Global biofuel production has grown sevenfold in the last 20 years, despite the rise of electric cars More than a million people die from road injuries every year Low-carbon electricity sources grew faster than demand in 2025, pushing fossil fuels into decline India went from 15% to 70% Internet access in a decade, mostly through mobile phones Teenage pregnancy rates have fallen across the world What is the most unequal country in South America? It depends on what metric you look at The global number of people without electricity has halved since 2000, but it has increased in Sub-Saharan Africa Which countries have fertility rates above or below the “replacement level”? Indoor air pollution causes almost three million premature deaths every year Death rates for cervical cancer in the United Kingdom have fallen by 80% since 1950 France’s nuclear fleet gives it one of the world’s lowest-carbon electricity grids Hunger levels have increased across Africa over the last decade Many countries are “leapfrogging” landlines and going straight to mobile phones The global suicide rate has fallen since the 1990s, but the death toll is still high Brazil, India, Vietnam, and Russia hold large reserves of rare earth, but mine very little of them China’s Great Leap Forward caused a dramatic spike in child deaths Estimates suggest that 45% of abortions globally are unsafe — but this varies widely across regions Mental health care is scarce everywhere — but in poor countries, it barely exists The world gets more seafood from aquaculture than wild catch Outside rich countries, widespread informal work means unemployment rates are low Coal power has effectively died in the United Kingdom Until fifty years ago, Argentina was richer than Spain In the 1980s, youth literacy was higher in Sub-Saharan Africa than in South Asia; it’s now the opposite Argentina was one of the richest countries in the world at the beginning of the 20th century The median age in China has rapidly caught up with the United Kingdom Smoking has already killed far more people this century than in the entire 20th century The world has made huge progress in reducing extreme poverty; could this be coming to an end? In 2025, solar and wind produced more electricity than fossil fuels in the European Union Women in Spain, Italy, and Portugal marry on average six years later than just two decades ago A record number of objects went into space in 2025 Oil spills from tankers have fallen by more than 90% since the 1970s Deforestation is no longer inevitable
Fertility rates across many countries have converged, despite starting from very different levels
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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