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): 6.47 in 1950 → 1.42 in 2025 (−78%). Thresholds: below 2.1 since 2017, below 1.5 since 2024. The trend broke around 1965 and 1993: −0.01 → −0.13 → −0.04 a year.
Births: 983k in 1950 → 895k in 2025 (−9%). Peak: 1.53M in 1981; the latest value is 42% lower. The trend broke around 1971 and 2019: +25.6k → −5.25k → −66.8k a year.
Population: 21M in 1950 → 87.3M in 2023 (×4.2).
Internet: 0% in 1990 → 89.8% in 2025 (+90 pp). Thresholds: above 10% since 2002, above 50% since 2014. Fastest growth in 2006–2011: 18.2% → 43.1%.
Urban share: 23.4% in 1960 → 89.5% in 2025 (+66 pp). Thresholds: above 50% since 1989, above 75% since 2013. The trend broke around 2010 and 2016: +0.94 → +3.3 → +0.07 a year.
GDP per person (PPP): 12,184 PPP dollars in 1990 → 37,301 PPP dollars in 2025 (×3.1). The trend broke around 2002 and 2019: +218 → +827 → +1,456 a year.
GDP growth: on average 4.2% in the 1980s, 4.1% in the 1990s, 4.1% in the 2000s, 5.9% in the 2010s, 5.2% in the 2020s. Lowest: −5.5% in 2001; highest: 11.8% in 2021.
Inflation: on average 51.2% in the 1980s, 77.2% in the 1990s, 23.1% in the 2000s, 9.8% in the 2010s, 41.9% in the 2020s. Lowest: 6.2% in 2009; highest: 110.6% in 1980.
What changed at the same time
The fastest decline of "Fertility (TFR)" was in 1973–1983: 5.41 → 4.06. Over the same years: births 1.51M → 1.51M; population 39.3M → 48.4M; urban share 33.4% → 43.2%; GDP growth 4.8% (1983); inflation 31.3% (1983); no data for the others in those years.
Over the last 10 years (2015–2025): fertility (TFR) 2.16 → 1.42; births 1.39M → 895k; population 80M (2015); internet 53.7% → 89.8%; urban share 87.2% → 89.5%; GDP per person (PPP) 25,985 PPP dollars → 37,301 PPP dollars; GDP growth 5.8% → 3.6%; inflation 7.7% → 34.9%.
How the indicators relate
Fertility (TFR) and internet (1990–2025, 34 years): levels are strongly related, in opposite directions (r = −0.90); 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 (1960–2025, 66 years): levels are strongly related, in opposite directions (r = −0.93); year-to-year changes show no reliable link (r = 0.29). 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) (1990–2025, 36 years): levels are strongly related, in opposite directions (r = −0.90); 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.
Forecasts vs actual
Fertility (TFR): past UN projections. The outcome was below the projection in 12 of 12 revisions (1998–2022) and above in none; median gap −17%.
The UN 2004 projection did not expect today's level (1.42, 2025) before its horizon ended (2047).
The UN 2019 projection did not expect today's level (1.42, 2025) before its horizon ended (2097).
Fertility (TFR): UN 2024 projection (medium): 2050 — 1.62 (+14% vs 2025), 2100 — 1.61 (+13% vs 2025); low variant for 2100: 1.11.
Births: past UN projections. The outcome was below the projection in 12 of 12 revisions (1998–2022) and above in none; median gap −17%.
The UN 2004 projection did not expect today's level (895k, 2025) before its horizon ended (2047).
The UN 2022 projection expected today's level (895k, 2025) only around 2070: reality is 45 years ahead of it.
National statistics for 2025: 895k, 15% below the UN 2024 medium variant (1.05M).
Births: UN 2024 projection (medium): 2050 — 848k (−5% vs 2025), 2100 — 444k (−50% vs 2025); low variant for 2100: 120k.
Population: past UN projections. The outcome was below the projection in 3 of 12 revisions (1998–2022) and above in 9; median gap +1.6%.
The UN 1998 projection expected today's level (87.3M, 2023) only around 2025: reality is 2 years ahead of it.
The UN 2019 projection expected today's level (87.3M, 2023) only around 2027: reality is 4 years ahead of it.
Population: UN 2024 projection (medium): 2050 — 91.3M (+5% vs 2023), 2100 — 65.3M (−25% vs 2023); low variant for 2100: 42.5M.
GDP growth: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 1.4 pp above the forecast; below it in 28% of cases; typical error ±3.1 pp. The biggest miss was for 2009: IMF, April 2008 expected 4.3%, the outcome was −4.9%.
GDP growth: latest IMF forecast (IMF, April 2026): 2026 — 3.4%, 2028 — 3.8%, 2031 — 4%.
Inflation: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 6.2 pp above the forecast; below it in 17% of cases; typical error ±6.9 pp. The biggest miss was for 2022: IMF, April 2021 expected 11.8%, the outcome was 72.3%.
Inflation: latest IMF forecast (IMF, April 2026): 2026 — 28.6%, 2028 — 17%, 2031 — 15%.
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
86.4M
87.3M
+1%
UN 2000
2023
23 years
85.2M
87.3M
+2.5%
UN 2002
2023
21 years
87.7M
87.3M
−0.5%
UN 2004
2023
19 years
89.1M
87.3M
−2.1%
UN 2006
2023
17 years
88.2M
87.3M
−1.1%
UN 2008
2023
15 years
86M
87.3M
+1.5%
UN 2010
2023
13 years
82.8M
87.3M
+5.5%
UN 2012
2023
11 years
82.4M
87.3M
+5.9%
UN 2015
2023
8 years
83.8M
87.3M
+4.1%
UN 2017
2023
6 years
85.4M
87.3M
+2.2%
UN 2019
2023
4 years
86M
87.3M
+1.5%
UN 2022
2023
1 year
85.8M
87.3M
+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
2020–2025
24 years
1.32M
1.06M
−20.2%
UN 2000
2020–2025
22 years
1.36M
1.06M
−22.6%
UN 2002
2020–2025
20 years
1.27M
1.06M
−16.7%
UN 2004
2020–2025
18 years
1.39M
1.06M
−23.8%
UN 2006
2020–2025
16 years
1.28M
1.06M
−17.8%
UN 2008
2020–2025
14 years
1.25M
1.06M
−15.7%
UN 2010
2020–2025
12 years
1.15M
1.06M
−8.3%
UN 2012
2020–2025
10 years
1.18M
1.06M
−10.3%
UN 2015
2020–2025
8 years
1.22M
1.06M
−13.2%
UN 2017
2020–2025
6 years
1.24M
1.06M
−15%
UN 2019
2020–2025
4 years
1.27M
1.06M
−17.1%
UN 2022
2025
3 years
1.18M
895k
−23.9%
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
2020–2025
24 years
2.10
1.61
−23.4%
UN 2000
2020–2025
22 years
2.10
1.61
−23.4%
UN 2002
2020–2025
20 years
1.85
1.61
−13.1%
UN 2004
2020–2025
18 years
2.03
1.61
−20.7%
UN 2006
2020–2025
16 years
1.91
1.61
−15.9%
UN 2008
2020–2025
14 years
1.90
1.61
−15.4%
UN 2010
2020–2025
12 years
1.83
1.61
−11.9%
UN 2012
2020–2025
10 years
1.89
1.61
−14.9%
UN 2015
2020–2025
8 years
1.92
1.61
−16.4%
UN 2017
2020–2025
6 years
1.94
1.61
−17.2%
UN 2019
2020–2025
4 years
1.99
1.61
−19.3%
UN 2022
2025
3 years
1.85
1.42
−23%
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
+1.4 pp
3.1 pp
28%
Inflation
36
+6.2 pp
6.9 pp
17%
Unemployment rate
29
−0.6 pp
1.2 pp
69%
Government gross debt
28
−5.2 pp
6.8 pp
86%
All indicators
Demography
Population
87.3M persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.