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): 6.36 in 1950 → 1.21 in 2023 (−81%). Thresholds: below 2.1 since 1990, below 1.5 since 2014. The trend broke around 1966 and 1986: −0.01 → −0.21 → −0.03 a year.
Births: 902k in 1950 → 462k in 2024 (−49%). Peak: 1.35M in 1968; the latest value is 66% lower. The trend broke around 1967 and 2013: +26.2k → −12.2k → −24.4k a year.
Population: 20.4M in 1950 → 71.7M in 2023 (×3.5). The trend broke around 2001: change slowed down (+923k → +377k a year).
Internet: 0% in 1990 → 90.9% in 2024 (+91 pp). Thresholds: above 10% since 2004, above 50% since 2017, above 90% since 2024. Fastest growth in 2015–2020: 39.3% → 77.8%.
Urban share: 11.8% in 1960 → 62.8% in 2025 (+51 pp). Threshold: above 50% since 2018. The trend broke around 1990: change sped up (+0.26 → +1.2 a year).
GDP per person (PPP): 8,703 PPP dollars in 1990 → 22,432 PPP dollars in 2025 (×2.6). The trend broke around 2001 and 2018: +256 → +470 → +204 a year.
GDP growth: on average 7.2% in the 1980s, 5.4% in the 1990s, 4.3% in the 2000s, 3.6% in the 2010s, 1.0% in the 2020s. Lowest: −7.6% in 1998; highest: 13.3% in 1988.
Inflation: on average 5.8% in the 1980s, 5.0% in the 1990s, 2.5% in the 2000s, 1.6% in the 2010s, 1.3% in the 2020s. Lowest: −0.9% in 2015; highest: 19.7% in 1980.
What changed at the same time
The fastest decline of "Fertility (TFR)" was in 1968–1978: 5.93 → 3.62. Over the same years: births 1.35M → 1.2M; population 34M → 43.8M; urban share 12.9% → 16.5%; no data for the others in those years.
Over the last 10 years (2013–2023): fertility (TFR) 1.53 → 1.21; births 794k → 591k; population 69.8M → 71.7M; internet 28.9% → 89.5%; urban share 45.8% → 60.9%; GDP per person (PPP) 18,244 PPP dollars → 21,245 PPP dollars; GDP growth 2.7% → 2.2%; inflation 2.2% → 1.2%.
How the indicators relate
Fertility (TFR) and internet (1990–2023, 34 years): levels are strongly related, in opposite directions (r = −0.92); year-to-year changes are weakly related (r = −0.42).
Fertility (TFR) and urban share (1960–2023, 64 years): levels are strongly related, in opposite directions (r = −0.75); year-to-year changes show no reliable link (r = 0.09). 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) (1990–2023, 34 years): levels are strongly related, in opposite directions (r = −0.97); year-to-year changes show no reliable link (r = 0.07). 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 11 of 11 revisions (1998–2022) and above in none; median gap −27%.
Fertility (TFR): UN 2024 projection (medium): 2050 — 1.29 (+6% vs 2023), 2100 — 1.44 (+19% vs 2023); low variant for 2100: 0.94.
Births: past UN projections. The outcome was below the projection in 9 of 11 revisions (1998–2022) and above in 2; median gap −25%.
The UN 2012 projection expected today's level (462k, 2024) only around 2055: reality is 31 years ahead of it.
The UN 2022 projection expected today's level (462k, 2024) only around 2056: reality is 32 years ahead of it.
National statistics for 2024: 462k, 21% below the UN 2024 medium variant (582k) and below its 95% interval.
Births: UN 2024 projection (medium): 2050 — 461k (0% vs 2024), 2100 — 328k (−29% vs 2024); low variant for 2100: 113k.
Population: past UN projections. The outcome was below the projection in 7 of 12 revisions (1998–2022) and above in 5; median gap −0.3%.
Population: UN 2024 projection (medium): 2050 — 66.4M (−7% vs 2023), 2100 — 45.6M (−36% vs 2023); low variant for 2100: 30.4M.
GDP growth: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 1.8 pp below the forecast; below it in 75% of cases; typical error ±2.8 pp. The biggest miss was for 2020: IMF, April 2019 expected 3.5%, the outcome was −6.1%.
GDP growth: latest IMF forecast (IMF, April 2026): 2026 — 1.5%, 2028 — 2.3%, 2031 — 2.5%.
Inflation: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.5 pp below the forecast; below it in 72% of cases; typical error ±1.7 pp. The biggest miss was for 2022: IMF, April 2021 expected 1%, the outcome was 6.1%.
Inflation: latest IMF forecast (IMF, April 2026): 2026 — 0.9%, 2028 — 1.2%, 2031 — 1.8%.
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
72.1M
71.7M
−0.5%
UN 2000
2023
23 years
76.6M
71.7M
−6.4%
UN 2002
2023
21 years
73.1M
71.7M
−2%
UN 2004
2023
19 years
72M
71.7M
−0.5%
UN 2006
2023
17 years
68.5M
71.7M
+4.6%
UN 2008
2023
15 years
72.2M
71.7M
−0.7%
UN 2010
2023
13 years
72.6M
71.7M
−1.3%
UN 2012
2023
11 years
67.9M
71.7M
+5.6%
UN 2015
2023
8 years
68.7M
71.7M
+4.4%
UN 2017
2023
6 years
69.6M
71.7M
+3%
UN 2019
2023
4 years
70.2M
71.7M
+2.2%
UN 2022
2023
1 year
71.8M
71.7M
−0.1%
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
935k
684k
−26.9%
UN 2000
2015–2020
18 years
1.02M
684k
−33.3%
UN 2002
2015–2020
16 years
980k
684k
−30.2%
UN 2004
2015–2020
14 years
950k
684k
−28%
UN 2006
2015–2020
12 years
855k
684k
−20%
UN 2008
2015–2020
10 years
943k
684k
−27.5%
UN 2010
2015–2020
8 years
744k
684k
−8.1%
UN 2012
2015–2020
6 years
635k
684k
+7.6%
UN 2015
2015–2020
2 years
675k
684k
+1.3%
UN 2017
2015–2020
0 years
689k
684k
−0.7%
UN 2022
2024
2 years
615k
462k
−24.8%
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
1.35
−29.2%
UN 2000
2015–2020
18 years
1.86
1.35
−27.7%
UN 2002
2015–2020
16 years
1.85
1.35
−27.3%
UN 2004
2015–2020
14 years
1.85
1.35
−27.3%
UN 2006
2015–2020
12 years
1.85
1.35
−27.3%
UN 2008
2015–2020
10 years
1.85
1.35
−27.3%
UN 2010
2015–2020
8 years
1.46
1.35
−7.6%
UN 2012
2015–2020
6 years
1.36
1.35
−1.4%
UN 2015
2015–2020
2 years
1.46
1.35
−7.7%
UN 2017
2015–2020
0 years
1.46
1.35
−7.7%
UN 2022
2023
1 year
1.32
1.21
−7.9%
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
−1.8 pp
2.8 pp
75%
Inflation
36
−0.5 pp
1.7 pp
72%
Unemployment rate
27
+0.2 pp
0.3 pp
15%
Government gross debt
24
−1 pp
3.2 pp
67%
All indicators
Demography
Population
71.7M persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.