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): 6.43 in 1950 → 4.00 in 2024 (−38%). Peak: 7.36 in 1984; the latest value is 46% lower. The trend broke around 1985 and 1998: +0.03 → −0.04 → −0.12 a year.
Births: 799k in 1950 → 4.11M in 2023 (×5.1). The trend broke around 1982 and 1995: +34.4k → +77.2k → +40k a year.
Population: 17.7M in 1950 → 129M in 2023 (×7.3). The trend broke around 1985: change sped up (+633k → +1.99M a year).
Internet: 0% in 1990 → 21.9% in 2024 (+22 pp). Threshold: above 10% since 2015. Fastest growth in 2011–2016: 1.1% → 15.4%.
Urban share: 7.1% in 1960 → 24.1% in 2025 (+17 pp). The trend broke around 2009: change sped up (+0.22 → +0.44 a year).
GDP per person (PPP): 874 PPP dollars in 1990 → 3,095 PPP dollars in 2025 (×3.5). Low: 681 PPP dollars in 1992; ×4.5 since then. The trend broke around 2003: change sped up (+3.3 → +77 a year).
GDP growth: on average 2.5% in the 1980s, 2.8% in the 1990s, 8.6% in the 2000s, 9.6% in the 2010s, 6.8% in the 2020s. Lowest: −11.4% in 1985; highest: 13.9% in 1987.
Inflation: on average 5.2% in the 1980s, 7.8% in the 1990s, 11.0% in the 2000s, 13.8% in the 2010s, 24.3% in the 2020s. Lowest: −9.1% in 1987; highest: 44.4% in 2008.
What changed at the same time
The fastest decline of "Fertility (TFR)" was in 2004–2014: 6.30 → 4.61. Over the same years: births 3.25M → 3.38M; population 76.1M → 101M; internet 0.2% → 7.7%; urban share 15.8% → 19%; GDP per person (PPP) 877 PPP dollars → 1,821 PPP dollars; GDP growth 11.7% → 10.3%; inflation 3.2% → 7.4%.
Over the last 10 years (2014–2024): fertility (TFR) 4.61 → 4.00; births 3.38M → 4.11M; population 101M → 129M; internet 7.7% → 21.9%; urban share 19% → 23.6%; GDP per person (PPP) 1,821 PPP dollars → 2,892 PPP dollars; GDP growth 10.3% → 8.1%; inflation 7.4% → 21%.
How the indicators relate
Fertility (TFR) and internet (1990–2024, 31 years): levels are strongly related, in opposite directions (r = −0.87); year-to-year changes show no reliable link (r = 0.01). This looks like a shared trend: both change over time, but not in step from year to year.
Fertility (TFR) and urban share (1960–2024, 65 years): levels are strongly related, in opposite directions (r = −0.84); year-to-year changes show no reliable link (r = 0.20). This looks like a shared trend: both change over time, but not in step from year to year.
Fertility (TFR) and GDP per person (PPP) (1990–2024, 35 years): levels are strongly related, in opposite directions (r = −0.95); year-to-year changes show no reliable link (r = −0.27). This looks like a shared trend: both change over time, but not in step from year to year.
Forecasts vs actual
Fertility (TFR): past UN projections. The outcome was below the projection in 4 of 11 revisions (1998–2022) and above in 7; median gap +3.2%.
The UN 1998 projection expected this level (4.00) already around 2021: reality is 3 years behind it.
The UN 2022 projection expected this level (4.00) already around 2022: reality is 2 years behind it.
Fertility (TFR): UN 2024 projection (medium): 2050 — 2.55 (−36% vs 2024), 2100 — 1.88 (−53% vs 2024); low variant for 2100: 1.38.
Births: past UN projections. The outcome was below the projection in 0 of 11 revisions (1998–2022) and above in 11; median gap +6.7%.
The UN 2000 projection expected today's level (4.11M, 2023) only around 2031: reality is 8 years ahead of it.
The UN 2022 projection expected today's level (4.11M, 2023) only around 2029: reality is 6 years ahead of it.
Births: UN 2024 projection (medium): 2050 — 4.79M (+17% vs 2023), 2100 — 4.63M (+13% vs 2023); low variant for 2100: 2.23M.
Population: past UN projections. The outcome was below the projection in 0 of 12 revisions (1998–2022) and above in 12; median gap +9.9%.
The UN 1998 projection did not expect today's level (129M, 2023) before its horizon ended (2030).
The UN 2022 projection expected today's level (129M, 2023) only around 2024: reality is 1 year ahead of it.
Population: UN 2024 projection (medium): 2050 — 225M (+75% vs 2023), 2100 — 367M (×2.9 vs 2023); low variant for 2100: 261M.
GDP growth: IMF next-year forecasts (33 editions, 2007–2023). On average the outcome was 2 pp above the forecast; below it in 18% of cases; typical error ±2.4 pp. The biggest miss was for 2021: IMF, October 2020 expected 0%, the outcome was 6.3%.
GDP growth: latest IMF forecast (IMF, April 2026): 2025 — 9.2%, 2027 — 7.9%, 2031 — 7.7%.
Inflation: IMF next-year forecasts (35 editions, 2007–2024). On average the outcome was 4.1 pp above the forecast; below it in 43% of cases; typical error ±9.3 pp. The biggest miss was for 2009: IMF, October 2008 expected 40.8%, the outcome was 8.5%.
Inflation: latest IMF forecast (IMF, April 2026): 2026 — 11.8%, 2028 — 8.3%, 2031 — 7.5%.
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
110M
129M
+16.6%
UN 2000
2023
23 years
108M
129M
+18.9%
UN 2002
2023
21 years
112M
129M
+15.4%
UN 2004
2023
19 years
114M
129M
+12.8%
UN 2006
2023
17 years
120M
129M
+7.1%
UN 2008
2023
15 years
115M
129M
+11.8%
UN 2010
2023
13 years
106M
129M
+20.9%
UN 2012
2023
11 years
119M
129M
+7.9%
UN 2015
2023
8 years
120M
129M
+7.4%
UN 2017
2023
6 years
121M
129M
+6.6%
UN 2019
2023
4 years
124M
129M
+4%
UN 2022
2023
1 year
127M
129M
+1.7%
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
2015–2020
20 years
3.5M
3.71M
+6.1%
UN 2000
2015–2020
18 years
3.6M
3.71M
+3.2%
UN 2002
2015–2020
16 years
3.62M
3.71M
+2.5%
UN 2004
2015–2020
14 years
3.48M
3.71M
+6.7%
UN 2006
2015–2020
12 years
3.54M
3.71M
+5%
UN 2008
2015–2020
10 years
3.35M
3.71M
+10.9%
UN 2010
2015–2020
8 years
2.63M
3.71M
+41.3%
UN 2012
2015–2020
6 years
3.23M
3.71M
+14.8%
UN 2015
2015–2020
2 years
3.24M
3.71M
+14.5%
UN 2017
2015–2020
0 years
3.3M
3.71M
+12.6%
UN 2022
2023
1 year
3.96M
4.11M
+3.6%
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
4.41
4.40
−0.3%
UN 2000
2015–2020
18 years
5.59
4.40
−21.3%
UN 2002
2015–2020
16 years
4.81
4.40
−8.5%
UN 2004
2015–2020
14 years
4.42
4.40
−0.4%
UN 2006
2015–2020
12 years
4.28
4.40
+2.8%
UN 2008
2015–2020
10 years
4.21
4.40
+4.4%
UN 2010
2015–2020
8 years
3.25
4.40
+35.6%
UN 2012
2015–2020
6 years
4.01
4.40
+9.8%
UN 2015
2015–2020
2 years
3.99
4.40
+10.2%
UN 2017
2015–2020
0 years
4.03
4.40
+9.3%
UN 2022
2024
2 years
3.88
4.00
+3.2%
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
33
+2 pp
2.4 pp
18%
Inflation
35
+4.1 pp
9.3 pp
43%
Government gross debt
25
+6.4 pp
9.8 pp
48%
All indicators
Demography
Population
129M persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.