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): 3.10 in 1950 → 1.42 in 2025 (−54%). Peak: 3.21 in 1961; the latest value is 56% lower. Thresholds: below 2.1 since 1973, below 1.5 since 2023. The trend broke around 1965 and 1976: +0.01 → −0.14 → 0 a year.
Births: 230k in 1950 → 167k in 2025 (−28%). Peak: 250k in 1964; the latest value is 33% lower. The trend broke around 1969 and 1975: +0.86k → −9.67k → −0.16k a year.
Population: 10.1M in 1950 → 18.1M in 2023 (+79%).
Internet: 0.3% in 1990 → 97% in 2024 (+97 pp). Thresholds: above 10% since 1997, above 50% since 2002, above 90% since 2010. Fastest growth in 1997–2002: 14.1% → 61.3%.
Urban share: 59.9% in 1960 → 95.9% in 2025 (+36 pp). Threshold: above 75% since 1997. The trend broke around 1994 and 2003: +0.32 → +1.4 → +0.66 a year.
GDP per person (PPP): 43,128 PPP dollars in 1990 → 71,378 PPP dollars in 2025 (+66%). The trend broke around 2007 and 2013: +1,186 → −96 → +860 a year.
GDP growth: on average 2.2% in the 1980s, 3.3% in the 1990s, 1.7% in the 2000s, 1.6% in the 2010s, 1.6% in the 2020s. Lowest: −3.9% in 2020; highest: 6.3% in 2021.
Inflation: on average 2.7% in the 1980s, 2.1% in the 1990s, 2.3% in the 2000s, 1.5% in the 2010s, 4.3% in the 2020s. Lowest: −1% in 1987; highest: 11.6% in 2022.
What changed at the same time
The fastest decline of "Fertility (TFR)" was in 1964–1974: 3.15 → 1.77. Over the same years: births 250k → 186k; population 12.1M → 13.6M; urban share 60.9% → 64.2%; no data for the others in those years.
Over the last 10 years (2015–2025): fertility (TFR) 1.66 → 1.42; births 172k → 167k; population 17.1M (2015); internet 91.7% → 97%; urban share 90.3% → 95.9%; GDP per person (PPP) 63,081 PPP dollars → 71,378 PPP dollars; GDP growth 2.1% → 1.9%; inflation 0.2% → 3%.
How the indicators relate
Fertility (TFR) and internet (1990–2024, 35 years): levels are barely related (r = 0.24); year-to-year changes show no reliable link (r = 0.13).
Fertility (TFR) and urban share (1960–2025, 66 years): levels are noticeably related, in opposite directions (r = −0.53); year-to-year changes show no reliable link (r = 0.06).
Fertility (TFR) and GDP per person (PPP) (1990–2025, 36 years): levels are barely related (r = −0.09); year-to-year changes show no reliable link (r = 0.25).
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 −15%.
Fertility (TFR): UN 2024 projection (medium): 2050 — 1.52 (+7% vs 2025), 2100 — 1.57 (+11% vs 2025); low variant for 2100: 1.07.
Births: past UN projections. The outcome was below the projection in 10 of 12 revisions (1998–2022) and above in 2; median gap −5.2%.
The UN 1998 projection expected this level (167k) already around 2001: reality is 24 years behind it.
National statistics for 2025: 167k, 4% below the UN 2024 medium variant (174k).
Births: UN 2024 projection (medium): 2050 — 164k (−2% vs 2025), 2100 — 149k (−11% vs 2025); low variant for 2100: 60.6k.
Population: past UN projections. The outcome was below the projection in 0 of 12 revisions (1998–2022) and above in 12; median gap +5.6%.
Population: UN 2024 projection (medium): 2050 — 19M (+5% vs 2023), 2100 — 17.5M (−3% vs 2023); low variant for 2100: 12.4M.
GDP growth: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.4 pp below the forecast; below it in 47% of cases; typical error ±1.5 pp. The biggest miss was for 2020: IMF, April 2019 expected 1.7%, the outcome was −3.9%.
GDP growth: latest IMF forecast (IMF, April 2026): 2026 — 1.2%, 2028 — 1.4%, 2031 — 1.2%.
Inflation: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.6 pp above the forecast; below it in 42% of cases; typical error ±1.4 pp. The biggest miss was for 2022: IMF, April 2021 expected 1.5%, the outcome was 11.6%.
Inflation: latest IMF forecast (IMF, April 2026): 2026 — 2.7%, 2028 — 2.3%, 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
15.8M
18.1M
+14.3%
UN 2000
2023
23 years
16.6M
18.1M
+9.3%
UN 2002
2023
21 years
17.1M
18.1M
+6%
UN 2004
2023
19 years
17.1M
18.1M
+5.7%
UN 2006
2023
17 years
16.9M
18.1M
+7.2%
UN 2008
2023
15 years
17.3M
18.1M
+4.8%
UN 2010
2023
13 years
17.1M
18.1M
+5.6%
UN 2012
2023
11 years
17.1M
18.1M
+5.6%
UN 2015
2023
8 years
17.3M
18.1M
+4.4%
UN 2017
2023
6 years
17.3M
18.1M
+4.4%
UN 2019
2023
4 years
17.2M
18.1M
+4.9%
UN 2022
2023
1 year
17.6M
18.1M
+2.7%
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
159k
171k
+7.6%
UN 2000
2020–2025
22 years
162k
171k
+6%
UN 2002
2020–2025
20 years
180k
171k
−4.6%
UN 2004
2020–2025
18 years
180k
171k
−4.7%
UN 2006
2020–2025
16 years
179k
171k
−4.5%
UN 2008
2020–2025
14 years
189k
171k
−9.4%
UN 2010
2020–2025
12 years
186k
171k
−7.9%
UN 2012
2020–2025
10 years
182k
171k
−5.8%
UN 2015
2020–2025
8 years
183k
171k
−6.6%
UN 2017
2020–2025
6 years
184k
171k
−6.9%
UN 2019
2020–2025
4 years
175k
171k
−2.3%
UN 2022
2025
3 years
184k
167k
−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
1.72
1.50
−13%
UN 2000
2020–2025
22 years
1.61
1.50
−7.1%
UN 2002
2020–2025
20 years
1.77
1.50
−15.3%
UN 2004
2020–2025
18 years
1.77
1.50
−15.3%
UN 2006
2020–2025
16 years
1.80
1.50
−16.7%
UN 2008
2020–2025
14 years
1.85
1.50
−19%
UN 2010
2020–2025
12 years
1.87
1.50
−20.1%
UN 2012
2020–2025
10 years
1.81
1.50
−17.4%
UN 2015
2020–2025
8 years
1.78
1.50
−16.2%
UN 2017
2020–2025
6 years
1.76
1.50
−15.2%
UN 2019
2020–2025
4 years
1.68
1.50
−11%
UN 2022
2025
3 years
1.64
1.42
−13.6%
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
−0.4 pp
1.5 pp
47%
Inflation
36
+0.6 pp
1.4 pp
42%
Unemployment rate
36
+0.6 pp
1.1 pp
50%
Government gross debt
26
−4.8 pp
5.6 pp
92%
All indicators
Demography
Population
18.1M persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.