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): 5.75 in 1950 → 4.56 in 2023 (−21%). Peak: 7.06 in 1981; the latest value is 35% lower. The trend broke around 1965 and 1984: +0.06 → +0.02 → −0.06 a year.
Births: 92k in 1950 → 478k in 2023 (×5.2).
Population: 2.25M in 1950 → 14.1M in 2023 (×6.3). The trend broke around 1980 and 2003: +54.1k → +174k → +314k a year.
Internet: 0% in 1990 → 34% in 2024 (+34 pp). Threshold: above 10% since 2015. Fastest growth in 2014–2019: 6% → 20.5%.
Urban share: 9.8% in 1960 → 53.4% in 2025 (+44 pp). Threshold: above 50% since 2021. The trend broke around 1987: change slowed down (+0.91 → +0.38 a year).
GDP per person (PPP): 2,207 PPP dollars in 1990 → 4,116 PPP dollars in 2025 (+87%). The trend broke around 2017: change sped up (+30 → +127 a year).
GDP growth: on average 1.7% in the 1980s, 4.8% in the 1990s, 4.3% in the 2000s, 4.8% in the 2010s, 6.2% in the 2020s. Lowest: −2.8% in 1989; highest: 9.3% in 1980.
Inflation: on average 2.2% in the 1980s, 7.7% in the 1990s, 3.2% in the 2000s, 1.3% in the 2010s, 1.9% in the 2020s. Lowest: −6.1% in 1983; highest: 38.5% in 1994.
What changed at the same time
The fastest decline of "Fertility (TFR)" was in 2013–2023: 5.41 → 4.56. Over the same years: births 424k → 478k; population 10.7M → 14.1M; internet 4.9% → 32.4%; urban share 44.7% → 51.7%; GDP per person (PPP) 2,893 PPP dollars → 3,721 PPP dollars; GDP growth 7.2% → 6.4%; inflation 0.4% → 2.7%.
How the indicators relate
Fertility (TFR) and internet (1990–2023, 29 years): levels are strongly related, in opposite directions (r = −0.88); year-to-year changes show no reliable link (r = −0.10). This looks like a shared trend: both change over time, but not in step from year to year.
Fertility (TFR) and urban share (1960–2023, 64 years): levels are strongly related, in opposite directions (r = −0.76); 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.
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 = −0.37). 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 1 of 11 revisions (1998–2022) and above in 10; median gap +13%.
The UN 1998 projection expected this level (4.56) already around 2010: reality is 13 years behind it.
The UN 2022 projection expected today's level (4.56, 2023) only around 2027: reality is 4 years ahead of it.
Fertility (TFR): UN 2024 projection (medium): 2050 — 3.06 (−33% vs 2023), 2100 — 2.14 (−53% vs 2023); low variant for 2100: 1.64.
Births: past UN projections. The outcome was below the projection in 1 of 11 revisions (1998–2022) and above in 10; median gap +14%.
The UN 2008 projection did not expect today's level (478k, 2023) before its horizon ended (2047).
The UN 2019 projection expected today's level (478k, 2023) only around 2027: reality is 4 years ahead of it.
Births: UN 2024 projection (medium): 2050 — 600k (+25% vs 2023), 2100 — 604k (+26% vs 2023); low variant for 2100: 310k.
Population: past UN projections. The outcome was below the projection in 0 of 12 revisions (1998–2022) and above in 12; median gap +7.5%.
The UN 1998 projection did not expect today's level (14.1M, 2023) before its horizon ended (2030).
The UN 2022 projection expected today's level (14.1M, 2023) only around 2025: reality is 2 years ahead of it.
Population: UN 2024 projection (medium): 2050 — 24.4M (+73% vs 2023), 2100 — 39.6M (×2.8 vs 2023); low variant for 2100: 28.2M.
GDP growth: IMF next-year forecasts (34 editions, 2007–2023). On average the outcome was 0.2 pp below the forecast; below it in 44% of cases; typical error ±1.4 pp. The biggest miss was for 2015: IMF, April 2014 expected 5.2%, the outcome was 1.8%.
GDP growth: latest IMF forecast (IMF, April 2026): 2025 — 7.5%, 2027 — 6.7%, 2031 — 6%.
Inflation: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.7 pp below the forecast; below it in 75% of cases; typical error ±2 pp. The biggest miss was for 2009: IMF, October 2008 expected 6.5%, the outcome was 0.9%.
Inflation: latest IMF forecast (IMF, April 2026): 2026 — 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
10.7M
14.1M
+32.1%
UN 2000
2023
23 years
11.5M
14.1M
+23%
UN 2002
2023
21 years
10.7M
14.1M
+31.6%
UN 2004
2023
19 years
13.6M
14.1M
+3.5%
UN 2006
2023
17 years
13.8M
14.1M
+2.1%
UN 2008
2023
15 years
13.1M
14.1M
+7.5%
UN 2010
2023
13 years
12.4M
14.1M
+13.7%
UN 2012
2023
11 years
13.3M
14.1M
+6.4%
UN 2015
2023
8 years
13.3M
14.1M
+6.1%
UN 2017
2023
6 years
13.1M
14.1M
+7.6%
UN 2019
2023
4 years
13.1M
14.1M
+7.5%
UN 2022
2023
1 year
13.7M
14.1M
+2.9%
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
303k
455k
+50.4%
UN 2000
2015–2020
18 years
354k
455k
+28.5%
UN 2002
2015–2020
16 years
318k
455k
+43%
UN 2004
2015–2020
14 years
411k
455k
+10.7%
UN 2006
2015–2020
12 years
415k
455k
+9.6%
UN 2008
2015–2020
10 years
391k
455k
+16.3%
UN 2010
2015–2020
8 years
388k
455k
+17.1%
UN 2012
2015–2020
6 years
400k
455k
+13.8%
UN 2015
2015–2020
2 years
402k
455k
+13.1%
UN 2017
2015–2020
0 years
413k
455k
+10.2%
UN 2022
2023
1 year
487k
478k
−1.9%
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
3.83
5.08
+32.7%
UN 2000
2015–2020
18 years
4.42
5.08
+14.9%
UN 2002
2015–2020
16 years
4.04
5.08
+25.8%
UN 2004
2015–2020
14 years
4.41
5.08
+15.2%
UN 2006
2015–2020
12 years
4.41
5.08
+15.2%
UN 2008
2015–2020
10 years
4.58
5.08
+10.9%
UN 2010
2015–2020
8 years
4.69
5.08
+8.3%
UN 2012
2015–2020
6 years
4.50
5.08
+12.9%
UN 2015
2015–2020
2 years
4.50
5.08
+12.8%
UN 2017
2015–2020
0 years
4.87
5.08
+4.4%
UN 2022
2023
1 year
4.82
4.56
−5.4%
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
34
−0.2 pp
1.4 pp
44%
Inflation
36
−0.7 pp
2 pp
75%
Government gross debt
26
−1.6 pp
8.2 pp
58%
All indicators
Demography
Population
14.1M persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.