Computed with the same code as the observations under the main chart and in the API (get_insights). Moving together in time does not prove a cause.
How the indicators changed
Fertility (TFR): 2.22 in 1950 → 1.56 in 2023 (−30%). Peak: 2.93 in 1964; the latest value is 47% lower. Threshold: below 2.1 since 1973. The trend broke around 1964 and 1976: +0.06 → −0.1 → 0 a year.
Births: 817k in 1950 → 650k in 2025 (−21%). Peak: 999k in 1964; the latest value is 35% lower. The trend broke around 1966 and 1975: +15.1k → −29.5k → +0.09k a year.
Population: 50.1M in 1950 → 68.7M in 2023 (+37%). The trend broke around 1969 and 2000: +293k → +102k → +446k a year.
Internet: 0.1% in 1990 → 95.5% in 2024 (+95 pp). Thresholds: above 10% since 1998, above 50% since 2002, above 90% since 2014. Fastest growth in 1998–2003: 13.7% → 64.8%.
Urban share: 78.6% in 1960 → 83.3% in 2025 (+4.8 pp). The trend broke around 1967 and 1994: −0.2 → +0.06 → +0.15 a year.
GDP per person (PPP): 33,531 PPP dollars in 1990 → 53,993 PPP dollars in 2025 (+61%). The trend broke around 2005 and 2011: +1,137 → −100 → +425 a year.
GDP growth: on average 2.6% in the 1980s, 2.1% in the 1990s, 1.7% in the 2000s, 2.0% in the 2010s, 1.1% in the 2020s. Lowest: −10% in 2020; highest: 8.5% in 2021.
Inflation: on average 7.0% in the 1980s, 3.3% in the 1990s, 1.8% in the 2000s, 2.2% in the 2010s, 4.3% in the 2020s. Lowest: 0% in 2015; highest: 16.8% in 1980.
What changed at the same time
The fastest decline of "Fertility (TFR)" was in 1965–1975: 2.87 → 1.81. Over the same years: births 989k → 697k; population 54.4M → 56.2M; urban share 77.6% → 77.5%; no data for the others in those years.
Over the last 10 years (2013–2023): fertility (TFR) 1.83 → 1.56; births 785k → 688k; population 64.4M → 68.7M; internet 89.8% → 95.4%; urban share 81.5% → 83.2%; GDP per person (PPP) 48,601 PPP dollars → 53,423 PPP dollars; GDP growth 1.7% → 0.3%; inflation 2.6% → 7.3%.
How the indicators relate
Fertility (TFR) and internet (1990–2023, 34 years): levels are barely related (r = 0.01); year-to-year changes show no reliable link (r = 0.19).
Fertility (TFR) and urban share (1960–2023, 64 years): levels are noticeably related, in opposite directions (r = −0.52); year-to-year changes show no reliable link (r = −0.23).
Fertility (TFR) and GDP per person (PPP) (1990–2023, 34 years): levels are barely related (r = −0.15); year-to-year changes show no reliable link (r = 0.18).
Forecasts vs actual
Fertility (TFR): past UN projections. The outcome was below the projection in 9 of 11 revisions (1998–2022) and above in 2; median gap −8%.
Fertility (TFR): UN 2024 projection (medium): 2050 — 1.55 (−1% vs 2023), 2100 — 1.60 (+2% vs 2023); low variant for 2100: 1.10.
Births: past UN projections. The outcome was below the projection in 10 of 12 revisions (1998–2022) and above in 2; median gap −11%.
The UN 1998 projection expected today's level (650k, 2025) only around 2027: reality is 2 years ahead of it.
National statistics for 2025: 650k, 5% below the UN 2024 medium variant (680k).
Births: UN 2024 projection (medium): 2050 — 727k (+12% vs 2025), 2100 — 636k (−2% vs 2025); low variant for 2100: 269k.
Population: past UN projections. The outcome was below the projection in 1 of 12 revisions (1998–2022) and above in 11; median gap +3.6%.
Population: UN 2024 projection (medium): 2050 — 75.5M (+10% vs 2023), 2100 — 74.3M (+8% vs 2023); low variant for 2100: 53.2M.
GDP growth: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.8 pp below the forecast; below it in 58% of cases; typical error ±1.8 pp. The biggest miss was for 2020: IMF, October 2019 expected 1.4%, the outcome was −10%.
GDP growth: latest IMF forecast (IMF, April 2026): 2026 — 0.8%, 2028 — 1.6%, 2031 — 1.4%.
Inflation: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.6 pp above the forecast; below it in 44% of cases; typical error ±1.4 pp. The biggest miss was for 2022: IMF, April 2021 expected 1.9%, the outcome was 9.1%.
Inflation: latest IMF forecast (IMF, April 2026): 2026 — 3.2%, 2028 — 2%, 2031 — 2%.
UN projections vs actual
Solid line: actual data, UN WPP 2024 estimates to 2023, then national statistics where comparable with the UN. Dashed: medium variants of past UN revisions. The table shows what each revision expected for the latest year (or five-year period) with actual data.
Population
persons, 1 July
Actual
UN 1998
UN 2000
UN 2002
UN 2004
UN 2006
UN 2008
UN 2010
UN 2012
UN 2015
UN 2017
UN 2019
UN 2022
UN 2024, medium
Release
Target period
Horizon
Expected
Actual
Actual vs expected
UN 1998
2023
25 years
60M
68.7M
+14.6%
UN 2000
2023
23 years
61.1M
68.7M
+12.3%
UN 2002
2023
21 years
62.9M
68.7M
+9.2%
UN 2004
2023
19 years
63.2M
68.7M
+8.7%
UN 2006
2023
17 years
64.7M
68.7M
+6.1%
UN 2008
2023
15 years
66M
68.7M
+4.1%
UN 2010
2023
13 years
66.9M
68.7M
+2.7%
UN 2012
2023
11 years
66.6M
68.7M
+3.2%
UN 2015
2023
8 years
67.8M
68.7M
+1.3%
UN 2017
2023
6 years
68.4M
68.7M
+0.4%
UN 2019
2023
4 years
68.8M
68.7M
−0.1%
UN 2022
2023
1 year
67.7M
68.7M
+1.4%
Births
births per year
Actual
UN 1998
UN 2000
UN 2002
UN 2004
UN 2006
UN 2008
UN 2010
UN 2012
UN 2015
UN 2017
UN 2019
UN 2022
UN 2024, medium
Release
Target period
Horizon
Expected
Actual
Actual vs expected
UN 1998
2020–2025
24 years
670k
680k
+1.4%
UN 2000
2020–2025
22 years
634k
680k
+7.2%
UN 2002
2020–2025
20 years
700k
680k
−3%
UN 2004
2020–2025
18 years
753k
680k
−9.8%
UN 2006
2020–2025
16 years
753k
680k
−9.7%
UN 2008
2020–2025
14 years
782k
680k
−13.1%
UN 2010
2020–2025
12 years
806k
680k
−15.7%
UN 2012
2020–2025
10 years
776k
680k
−12.4%
UN 2015
2020–2025
8 years
811k
680k
−16.2%
UN 2017
2020–2025
6 years
797k
680k
−14.7%
UN 2019
2020–2025
4 years
773k
680k
−12%
UN 2022
2025
3 years
676k
650k
−3.9%
Total fertility rate
children per woman
Actual
UN 1998
UN 2000
UN 2002
UN 2004
UN 2006
UN 2008
UN 2010
UN 2012
UN 2015
UN 2017
UN 2019
UN 2022
UN 2024, medium
Release
Target period
Horizon
Expected
Actual
Actual vs expected
UN 1998
2015–2020
20 years
1.90
1.70
−10.2%
UN 2000
2015–2020
18 years
1.65
1.70
+3.1%
UN 2002
2015–2020
16 years
1.64
1.70
+3.8%
UN 2004
2015–2020
14 years
1.77
1.70
−3.6%
UN 2006
2015–2020
12 years
1.85
1.70
−8%
UN 2008
2015–2020
10 years
1.85
1.70
−8%
UN 2010
2015–2020
8 years
1.90
1.70
−10.3%
UN 2012
2015–2020
6 years
1.89
1.70
−9.8%
UN 2015
2015–2020
2 years
1.91
1.70
−10.8%
UN 2017
2015–2020
0 years
1.87
1.70
−9%
UN 2022
2023
1 year
1.57
1.56
−0.6%
IMF forecasts vs actual
Solid line: actual values from the latest IMF edition (data get revised, so we use the newest). Dashed: April editions, current year and five years ahead. The table covers next-year forecasts from all editions: mean error shows bias, mean absolute error shows accuracy.
Real GDP growth
% per year
Actual (IMF)
WEO, April editions
Indicator
Forecasts
Mean error
Mean absolute error
Actual below forecast
Real GDP growth
36
−0.8 pp
1.8 pp
58%
Inflation
36
+0.6 pp
1.4 pp
44%
Unemployment rate
36
−0.4 pp
0.8 pp
64%
Government gross debt
29
−1.7 pp
6.9 pp
86%
All indicators
Demography
Population
68.7M persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.