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): 4.84 in 1950 → 0.99 in 2025 (−80%). Thresholds: below 2.1 since 1999, below 1.5 since 2019, below 1.0 since 2025. The trend broke around 1962 and 1978: −0.01 → −0.11 → −0.04 a year.
Births: 249k in 1950 → 154k in 2024 (−38%). Peak: 298k in 1991; the latest value is 48% lower. The trend broke around 1990 and 2018: +0.32k → −2.33k → −9.98k a year.
Population: 6.63M in 1950 → 19.7M in 2023 (×3).
Internet: 0% in 1990 → 95.6% in 2024 (+96 pp). Thresholds: above 10% since 2000, above 50% since 2011, above 90% since 2021. Fastest growth in 2010–2015: 45% → 76.6%.
Urban share: 67.8% in 1960 → 89.2% in 2025 (+21 pp). Threshold: above 75% since 1970. The trend broke around 1978: change slowed down (+0.72 → +0.22 a year).
GDP per person (PPP): 10,955 PPP dollars in 1990 → 30,863 PPP dollars in 2025 (×2.8). The trend broke around 2014: change slowed down (+666 → +269 a year).
GDP growth: on average 3.6% in the 1980s, 5.9% in the 1990s, 4.2% in the 2000s, 3.3% in the 2010s, 2.1% in the 2020s. Lowest: −13.6% in 1982; highest: 11.3% in 2021.
Inflation: on average 21.4% in the 1980s, 11.8% in the 1990s, 3.5% in the 2000s, 2.9% in the 2010s, 5.8% in the 2020s. Lowest: 1.1% in 2004; highest: 35.1% in 1980.
What changed at the same time
The fastest decline of "Fertility (TFR)" was in 1965–1975: 4.36 → 3.18. Over the same years: births 292k → 272k; population 9.01M → 10.7M; urban share 71.8% → 78.8%; no data for the others in those years.
Over the last 10 years (2015–2025): fertility (TFR) 1.74 → 0.99; births 237k → 154k; population 18M (2015); internet 76.6% → 95.6%; urban share 87.5% → 89.2%; GDP per person (PPP) 27,818 PPP dollars → 30,863 PPP dollars; GDP growth 2.2% → 2.3%; inflation 4.3% → 4.2%.
How the indicators relate
Fertility (TFR) and internet (1990–2023, 33 years): levels are strongly related, in opposite directions (r = −0.93); year-to-year changes show no reliable link (r = 0.19). This looks like a shared trend: both change over time, but not in step from year to year.
Fertility (TFR) and urban share (1960–2025, 65 years): levels are strongly related, in opposite directions (r = −0.99); year-to-year changes are related too (r = −0.63). Changes line up from year to year too, which is more than a shared trend.
Fertility (TFR) and GDP per person (PPP) (1990–2025, 35 years): levels are strongly related, in opposite directions (r = −0.93); year-to-year changes show no reliable link (r = 0.14). This looks like a shared trend: both change over time, but not in step from year to year. Changes line up best with a 1 year shift: "GDP per person (PPP)" moves first, then "Fertility (TFR)" (r = 0.59).
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 −16%.
Fertility (TFR): UN 2024 projection (medium): 2050 — 1.24 (+25% vs 2025), 2100 — 1.41 (+42% vs 2025); low variant for 2100: 0.91.
Births: past UN projections. The outcome was below the projection in 11 of 11 revisions (1998–2022) and above in none; median gap −13%.
The UN 2004 projection did not expect today's level (154k, 2024) before its horizon ended (2047).
The UN 2022 projection expected today's level (154k, 2024) only around 2075: reality is 51 years ahead of it.
National statistics for 2024: 154k, 10% below the UN 2024 medium variant (172k).
Births: UN 2024 projection (medium): 2050 — 144k (−7% vs 2024), 2100 — 80.1k (−48% vs 2024); low variant for 2100: 23.7k.
Population: past UN projections. The outcome was below the projection in 0 of 12 revisions (1998–2022) and above in 12; median gap +2.7%.
The UN 1998 projection expected today's level (19.7M, 2023) only around 2026: reality is 3 years ahead of it.
The UN 2015 projection expected today's level (19.7M, 2023) only around 2026: reality is 3 years ahead of it.
Population: UN 2024 projection (medium): 2050 — 20.3M (+3% vs 2023), 2100 — 13.4M (−32% vs 2023); low variant for 2100: 8.91M.
GDP growth: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.7 pp below the forecast; below it in 61% of cases; typical error ±2.3 pp. The biggest miss was for 2020: IMF, April 2019 expected 3.2%, the outcome was −6.1%.
GDP growth: latest IMF forecast (IMF, April 2026): 2026 — 2.4%, 2028 — 2.3%, 2031 — 2.3%.
Inflation: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.7 pp above the forecast; below it in 44% of cases; typical error ±1.7 pp. The biggest miss was for 2022: IMF, April 2021 expected 3%, the outcome was 11.6%.
Inflation: latest IMF forecast (IMF, April 2026): 2026 — 2.9%, 2028 — 3%, 2031 — 3%.
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
19.2M
19.7M
+2.1%
UN 2000
2023
23 years
19.2M
19.7M
+2.1%
UN 2002
2023
21 years
19.4M
19.7M
+1.6%
UN 2004
2023
19 years
19M
19.7M
+3.3%
UN 2006
2023
17 years
19M
19.7M
+3.3%
UN 2008
2023
15 years
19M
19.7M
+3.3%
UN 2010
2023
13 years
18.9M
19.7M
+4.1%
UN 2012
2023
11 years
19M
19.7M
+3.3%
UN 2015
2023
8 years
19.3M
19.7M
+1.7%
UN 2017
2023
6 years
18.9M
19.7M
+4.2%
UN 2019
2023
4 years
19.2M
19.7M
+2.1%
UN 2022
2023
1 year
19.6M
19.7M
+0.2%
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
294k
219k
−25.4%
UN 2000
2015–2020
18 years
294k
219k
−25.4%
UN 2002
2015–2020
16 years
295k
219k
−25.6%
UN 2004
2015–2020
14 years
251k
219k
−12.6%
UN 2006
2015–2020
12 years
251k
219k
−12.6%
UN 2008
2015–2020
10 years
251k
219k
−12.6%
UN 2010
2015–2020
8 years
241k
219k
−8.9%
UN 2012
2015–2020
6 years
243k
219k
−9.8%
UN 2015
2015–2020
2 years
233k
219k
−5.8%
UN 2017
2015–2020
0 years
237k
219k
−7.4%
UN 2022
2024
2 years
223k
154k
−30.7%
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
2.15
1.55
−28%
UN 2000
2015–2020
18 years
2.15
1.55
−28%
UN 2002
2015–2020
16 years
2.15
1.55
−28%
UN 2004
2015–2020
14 years
1.85
1.55
−16.3%
UN 2006
2015–2020
12 years
1.85
1.55
−16.3%
UN 2008
2015–2020
10 years
1.85
1.55
−16.3%
UN 2010
2015–2020
8 years
1.78
1.55
−12.8%
UN 2012
2015–2020
6 years
1.79
1.55
−13.3%
UN 2015
2015–2020
2 years
1.73
1.55
−10.3%
UN 2017
2015–2020
0 years
1.77
1.55
−12.3%
UN 2022
2025
3 years
1.53
0.99
−35.3%
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
−0.7 pp
2.3 pp
61%
Inflation
36
+0.7 pp
1.7 pp
44%
Unemployment rate
29
+0.2 pp
0.9 pp
52%
Government gross debt
26
+1.8 pp
2.1 pp
12%
All indicators
Demography
Population
19.7M persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.