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): 3.06 in 1950 → 1.48 in 2024 (−52%). Peak: 3.54 in 1961; the latest value is 58% lower. Thresholds: below 2.1 since 1976, below 1.5 since 2024. The trend broke around 1961 and 1979: +0.04 → −0.09 → 0 a year.
Births: 189k in 1950 → 290k in 2025 (+53%). The trend broke around 1972 and 1978: +3.12k → −5.56k → +1.84k a year.
Population: 8.18M in 1950 → 26.5M in 2023 (×3.2).
Internet: 0.6% in 1990 → 96.1% in 2024 (+96 pp). Thresholds: above 10% since 1997, above 50% since 2001, above 90% since 2018. Fastest growth in 1996–2001: 3.3% → 52.7%.
Urban share: 81.6% in 1960 → 87.7% in 2025 (+6.1 pp). The trend broke around 1973 and 1999: +0.35 → −0.04 → +0.11 a year.
GDP per person (PPP): 36,268 PPP dollars in 1990 → 60,194 PPP dollars in 2025 (+66%). The trend broke around 2005: change slowed down (+1,213 → +527 a year).
GDP growth: on average 3.5% in the 1980s, 3.3% in the 1990s, 3.2% in the 2000s, 2.6% in the 2010s, 2.1% in the 2020s. Lowest: −2% in 2020; highest: 6.3% in 1984.
Inflation: on average 8.4% in the 1980s, 2.5% in the 1990s, 3.2% in the 2000s, 2.1% in the 2010s, 3.7% in the 2020s. Lowest: 0.2% in 1997; highest: 11.4% in 1982.
What changed at the same time
The fastest decline of "Fertility (TFR)" was in 1971–1981: 2.95 → 1.94. Over the same years: births 280k → 235k; population 13M → 14.9M; urban share 85.6% → 85.7%; GDP growth 4.1% (1981); inflation 9.5% (1981); no data for the others in those years.
Over the last 10 years (2014–2024): fertility (TFR) 1.81 → 1.48; births 300k → 292k; population 23.6M → 26.5M; internet 84% → 96.1%; urban share 86.7% → 87.6%; GDP per person (PPP) 55,489 PPP dollars → 60,310 PPP dollars; GDP growth 2.6% → 1%; inflation 2.5% → 3.2%.
How the indicators relate
Fertility (TFR) and internet (1990–2024, 32 years): levels are barely related (r = −0.35); year-to-year changes show no reliable link (r = 0.04).
Fertility (TFR) and urban share (1960–2024, 65 years): levels are strongly related, in opposite directions (r = −0.82); 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.
Fertility (TFR) and GDP per person (PPP) (1990–2024, 35 years): levels are barely related (r = −0.38); year-to-year changes are weakly related (r = 0.47).
Forecasts vs actual
Fertility (TFR): past UN projections. The outcome was below the projection in 10 of 11 revisions (1998–2022) and above in 1; median gap −6.6%.
Fertility (TFR): UN 2024 projection (medium): 2050 — 1.64 (+11% vs 2024), 2100 — 1.63 (+10% vs 2024); low variant for 2100: 1.13.
Births: past UN projections. The outcome was below the projection in 6 of 12 revisions (1998–2022) and above in 6; median gap −0.8%.
National statistics for 2025: 290k, 5% below the UN 2024 medium variant (304k).
Births: UN 2024 projection (medium): 2050 — 332k (+15% vs 2025), 2100 — 408k (+41% vs 2025); low variant for 2100: 198k.
Population: past UN projections. The outcome was below the projection in 1 of 12 revisions (1998–2022) and above in 11; median gap +5.2%.
The UN 2000 projection expected today's level (26.5M, 2023) only around 2050: reality is 27 years ahead of it.
The UN 2022 projection expected today's level (26.5M, 2023) only around 2024: reality is 1 year ahead of it.
Population: UN 2024 projection (medium): 2050 — 32.5M (+23% vs 2023), 2100 — 43.1M (+63% vs 2023); low variant for 2100: 32.8M.
GDP growth: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.5 pp below the forecast; below it in 78% of cases; typical error ±0.9 pp. The biggest miss was for 2020: IMF, April 2019 expected 2.8%, the outcome was −2%.
GDP growth: latest IMF forecast (IMF, April 2026): 2026 — 2%, 2028 — 1.9%, 2031 — 2.3%.
Inflation: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.1 pp above the forecast; below it in 64% of cases; typical error ±1.1 pp. The biggest miss was for 2022: IMF, April 2021 expected 1.6%, the outcome was 6.6%.
Inflation: latest IMF forecast (IMF, April 2026): 2026 — 4%, 2028 — 2.6%, 2031 — 2.4%.
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
22.8M
26.5M
+16%
UN 2000
2023
23 years
23.2M
26.5M
+13.9%
UN 2002
2023
21 years
22.9M
26.5M
+15.4%
UN 2004
2023
19 years
23.9M
26.5M
+10.5%
UN 2006
2023
17 years
24M
26.5M
+10.2%
UN 2008
2023
15 years
24.3M
26.5M
+8.9%
UN 2010
2023
13 years
26.1M
26.5M
+1.5%
UN 2012
2023
11 years
26.3M
26.5M
+0.4%
UN 2015
2023
8 years
26.5M
26.5M
−0.2%
UN 2017
2023
6 years
26.3M
26.5M
+0.6%
UN 2019
2023
4 years
26.3M
26.5M
+0.4%
UN 2022
2023
1 year
26.4M
26.5M
0%
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
272k
299k
+9.9%
UN 2000
2020–2025
22 years
276k
299k
+8.3%
UN 2002
2020–2025
20 years
259k
299k
+15.5%
UN 2004
2020–2025
18 years
290k
299k
+3.2%
UN 2006
2020–2025
16 years
284k
299k
+5.3%
UN 2008
2020–2025
14 years
288k
299k
+4.1%
UN 2010
2020–2025
12 years
335k
299k
−10.7%
UN 2012
2020–2025
10 years
324k
299k
−7.7%
UN 2015
2020–2025
8 years
325k
299k
−7.8%
UN 2017
2020–2025
6 years
318k
299k
−5.9%
UN 2019
2020–2025
4 years
316k
299k
−5.4%
UN 2022
2025
3 years
304k
290k
−4.8%
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
1.73
−9%
UN 2000
2015–2020
18 years
1.82
1.73
−4.9%
UN 2002
2015–2020
16 years
1.70
1.73
+2%
UN 2004
2015–2020
14 years
1.84
1.73
−6.2%
UN 2006
2015–2020
12 years
1.85
1.73
−6.6%
UN 2008
2015–2020
10 years
1.85
1.73
−6.6%
UN 2010
2015–2020
8 years
1.97
1.73
−12.2%
UN 2012
2015–2020
6 years
1.87
1.73
−7.7%
UN 2015
2015–2020
2 years
1.86
1.73
−7.1%
UN 2017
2015–2020
0 years
1.83
1.73
−5.6%
UN 2022
2024
2 years
1.60
1.48
−7.6%
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
−0.5 pp
0.9 pp
78%
Inflation
36
+0.1 pp
1.1 pp
64%
Unemployment rate
36
−0.2 pp
0.7 pp
61%
Government gross debt
26
−0.5 pp
7.3 pp
38%
All indicators
Demography
Population
26.5M persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.