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): 2.93 in 1950 → 1.37 in 2025 (−53%). Low: 1.18 in 1999; +16% since then. Thresholds: below 2.1 since 1989, below 1.5 since 2022. The trend broke around 2003 and 2014: −0.03 → +0.05 → −0.04 a year.
Births: 2.89M in 1950 → 1.22M in 2024 (−58%). The trend broke around 1988 and 1994: −15.5k → −118k → +7.98k a year.
Population: 103M in 1950 → 145M in 2023 (+41%). The trend broke around 1962 and 1990: +1.7M → +879k → −108k a year.
Internet: 0% in 1990 → 94.4% in 2024 (+94 pp). Thresholds: above 10% since 2004, above 50% since 2011, above 90% since 2022. Fastest growth in 2007–2012: 24.7% → 66%.
Urban share: 54.1% in 1960 → 75.3% in 2025 (+21 pp). Threshold: above 75% since 2024. The trend broke around 1977 and 1986: +0.83 → +0.47 → +0.05 a year.
GDP per person (PPP): 29,644 PPP dollars in 1990 → 42,358 PPP dollars in 2025 (+43%). Low: 17,053 PPP dollars in 1998; +148% since then. The trend broke around 1997 and 2008: −1,906 → +1,576 → +465 a year.
GDP growth: on average −3.8% in the 1990s, 5.5% in the 2000s, 2.0% in the 2010s, 2.0% in the 2020s. Lowest: −12.7% in 1994; highest: 10.1% in 2000.
Inflation: on average 362.2% in the 1990s, 14.0% in the 2000s, 6.9% in the 2010s, 7.8% in the 2020s. Lowest: 2.9% in 2018; highest: 1,569% in 1992.
What changed at the same time
The fastest decline of "Fertility (TFR)" was in 1987–1997: 2.25 → 1.24. Over the same years: births 2.55M → 1.29M; population 146M → 148M; internet 0.5% (1997); urban share 72.9% → 73.1%; GDP per person (PPP) 17,977 PPP dollars (1997); GDP growth 1.4% (1997); inflation 14.8% (1997).
Over the last 10 years (2015–2025): fertility (TFR) 1.79 → 1.37; births 1.94M → 1.22M; population 145M (2015); internet 70.1% → 94.4%; urban share 74.3% → 75.3%; GDP per person (PPP) 35,037 PPP dollars → 42,358 PPP dollars; GDP growth −2% → 1%; inflation 15.5% → 8.7%.
How the indicators relate
Fertility (TFR) and internet (1990–2024, 34 years): levels are noticeably related, in the same direction (r = 0.54); year-to-year changes are related too (r = 0.50). Changes line up from year to year too, which is more than a shared trend.
Fertility (TFR) and urban share (1960–2025, 66 years): levels are strongly related, in opposite directions (r = −0.72); year-to-year changes show no reliable link (r = 0.30). 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 noticeably related, in the same direction (r = 0.57); year-to-year changes are weakly related (r = 0.44).
Forecasts vs actual
Fertility (TFR): past UN projections. The outcome was below the projection in 10 of 12 revisions (1998–2022) and above in 2; median gap −12%.
The UN 2000 projection expected this level (1.37) already around 2023: reality is 2 years behind it.
The UN 2006 projection expected this level (1.37) already around 2013: reality is 12 years behind it.
Fertility (TFR): UN 2024 projection (medium): 2050 — 1.54 (+12% vs 2025), 2100 — 1.59 (+16% vs 2025); low variant for 2100: 1.09.
Births: past UN projections. The outcome was below the projection in 3 of 11 revisions (1998–2022) and above in 8; median gap +14%.
The UN 2000 projection expected this level (1.22M) already around 2010: reality is 14 years behind it.
The UN 2022 projection expected today's level (1.22M, 2024) only around 2074: reality is 50 years ahead of it.
National statistics for 2024: 1.22M, 4% below the UN 2024 medium variant (1.27M).
Births: UN 2024 projection (medium): 2050 — 1.36M (+12% vs 2024), 2100 — 1.17M (−5% vs 2024); low variant for 2100: 486k.
Population: past UN projections. The outcome was below the projection in 1 of 12 revisions (1998–2022) and above in 11; median gap +4.9%.
Population: UN 2024 projection (medium): 2050 — 136M (−6% vs 2023), 2100 — 126M (−13% vs 2023); low variant for 2100: 87.9M.
GDP growth: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.7 pp below the forecast; below it in 53% of cases; typical error ±3 pp. The biggest miss was for 2009: IMF, April 2008 expected 6.3%, the outcome was −7.8%.
GDP growth: latest IMF forecast (IMF, April 2026): 2026 — 1.1%, 2028 — 1%, 2031 — 1%.
Inflation: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 1.4 pp above the forecast; below it in 42% of cases; typical error ±3.2 pp. The biggest miss was for 2022: IMF, April 2021 expected 3.4%, the outcome was 13.8%.
Inflation: latest IMF forecast (IMF, April 2026): 2026 — 5.6%, 2028 — 4%, 2031 — 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
139M
145M
+4.6%
UN 2000
2023
23 years
127M
145M
+14.2%
UN 2002
2023
21 years
126M
145M
+15.2%
UN 2004
2023
19 years
131M
145M
+11.2%
UN 2006
2023
17 years
130M
145M
+12%
UN 2008
2023
15 years
134M
145M
+8.8%
UN 2010
2023
13 years
140M
145M
+3.9%
UN 2012
2023
11 years
138M
145M
+5.2%
UN 2015
2023
8 years
142M
145M
+2.4%
UN 2017
2023
6 years
143M
145M
+1.6%
UN 2019
2023
4 years
146M
145M
−0.1%
UN 2022
2023
1 year
144M
145M
+0.7%
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
2015–2020
20 years
1.38M
1.68M
+21.5%
UN 2000
2015–2020
18 years
1.13M
1.68M
+48.7%
UN 2002
2015–2020
16 years
1.13M
1.68M
+49.1%
UN 2004
2015–2020
14 years
1.39M
1.68M
+21%
UN 2006
2015–2020
12 years
1.32M
1.68M
+27.5%
UN 2008
2015–2020
10 years
1.47M
1.68M
+14.1%
UN 2010
2015–2020
8 years
1.59M
1.68M
+5.4%
UN 2012
2015–2020
6 years
1.6M
1.68M
+4.9%
UN 2015
2015–2020
2 years
1.77M
1.68M
−5.1%
UN 2017
2015–2020
0 years
1.78M
1.68M
−5.8%
UN 2022
2024
2 years
1.35M
1.22M
−9.5%
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
1.66
1.45
−12.7%
UN 2000
2020–2025
22 years
1.36
1.45
+6.8%
UN 2002
2020–2025
20 years
1.37
1.45
+5.8%
UN 2004
2020–2025
18 years
1.58
1.45
−8.2%
UN 2006
2020–2025
16 years
1.46
1.45
−1%
UN 2008
2020–2025
14 years
1.58
1.45
−8.1%
UN 2010
2020–2025
12 years
1.67
1.45
−13.4%
UN 2012
2020–2025
10 years
1.66
1.45
−12.5%
UN 2015
2020–2025
8 years
1.76
1.45
−17.7%
UN 2017
2020–2025
6 years
1.79
1.45
−19%
UN 2019
2020–2025
4 years
1.83
1.45
−20.6%
UN 2022
2025
3 years
1.55
1.37
−11.4%
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
36
−0.7 pp
3 pp
53%
Inflation
36
+1.4 pp
3.2 pp
42%
Unemployment rate
29
−0.8 pp
1 pp
90%
Government gross debt
28
−1.9 pp
3.5 pp
71%
All indicators
Demography
Population
145M persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.