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): 6.43 in 1950 → 1.60 in 2024 (−75%). Threshold: below 2.1 since 2013. The trend broke around 1960 and 1976: +0.01 → −0.14 → −0.06 a year.
Births: 273k in 1950 → 415k in 2024 (+52%). Peak: 544k in 1996; the latest value is 24% lower. The trend broke around 1976 and 1995: +2.93k → +8.3k → −2.76k a year.
Population: 6.1M in 1950 → 35.1M in 2023 (×5.8).
Internet: 0% in 1990 → 98% in 2024 (+98 pp). Thresholds: above 10% since 1999, above 50% since 2006, above 90% since 2021. Fastest growth in 1997–2002: 2.3% → 32.3%.
Urban share: 26.1% in 1960 → 77.4% in 2025 (+51 pp). Thresholds: above 50% since 1991, above 75% since 2020. The trend broke around 1979 and 2003: +0.36 → +1.4 → +0.52 a year.
GDP per person (PPP): 12,014 PPP dollars in 1990 → 35,461 PPP dollars in 2025 (×3). The trend broke around 1996 and 2002: +950 → +152 → +693 a year.
GDP growth: on average 5.9% in the 1980s, 7.2% in the 1990s, 4.7% in the 2000s, 5.4% in the 2010s, 3.5% in the 2020s. Lowest: −7.4% in 1998; highest: 10% in 1996.
Inflation: on average 3.6% in the 1980s, 3.7% in the 1990s, 2.2% in the 2000s, 2.1% in the 2010s, 1.7% in the 2020s. Lowest: −1.1% in 2020; highest: 9.7% in 1981.
What changed at the same time
The fastest decline of "Fertility (TFR)" was in 1962–1972: 6.30 → 4.82. Over the same years: births 346k → 349k; population 8.38M → 10.7M; urban share 26.8% → 30.1%; no data for the others in those years.
Over the last 10 years (2014–2024): fertility (TFR) 2.06 → 1.60; births 513k → 415k; population 30.7M → 35.1M; internet 63.7% → 98%; urban share 73% → 76.9%; GDP per person (PPP) 26,818 PPP dollars → 34,116 PPP dollars; GDP growth 6% → 5.1%; inflation 3.1% → 1.8%.
How the indicators relate
Fertility (TFR) and internet (1990–2024, 34 years): levels are strongly related, in opposite directions (r = −1.00); year-to-year changes are related too (r = −0.51). Changes line up from year to year too, which is more than a shared trend. Changes line up best with a 8 years shift: "Internet" moves first, then "Fertility (TFR)" (r = 0.66).
Fertility (TFR) and urban share (1960–2024, 65 years): levels are strongly related, in opposite directions (r = −0.95); year-to-year changes show no reliable link (r = 0.22). 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) (1990–2024, 35 years): levels are strongly related, in opposite directions (r = −0.96); year-to-year changes are weakly related (r = 0.38).
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 −11%.
The UN 2002 projection did not expect today's level (1.60, 2024) before its horizon ended (2047).
The UN 2019 projection did not expect today's level (1.60, 2024) before its horizon ended (2097).
Fertility (TFR): UN 2024 projection (medium): 2050 — 1.53 (−5% vs 2024), 2100 — 1.56 (−2% vs 2024); low variant for 2100: 1.06.
Births: past UN projections. The outcome was below the projection in 11 of 11 revisions (1998–2022) and above in none; median gap −9.2%.
The UN 2002 projection did not expect today's level (415k, 2024) before its horizon ended (2047).
The UN 2022 projection expected today's level (415k, 2024) only around 2062: reality is 38 years ahead of it.
National statistics for 2024: 415k, 6% below the UN 2024 medium variant (440k).
Births: UN 2024 projection (medium): 2050 — 443k (+7% vs 2024), 2100 — 378k (−9% vs 2024); low variant for 2100: 153k.
Population: past UN projections. The outcome was below the projection in 0 of 12 revisions (1998–2022) and above in 12; median gap +5.4%.
The UN 1998 projection did not expect today's level (35.1M, 2023) before its horizon ended (2030).
The UN 2022 projection expected today's level (35.1M, 2023) only around 2026: reality is 3 years ahead of it.
Population: UN 2024 projection (medium): 2050 — 44.3M (+26% vs 2023), 2100 — 44M (+25% vs 2023); low variant for 2100: 30.8M.
GDP growth: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.7 pp below the forecast; below it in 50% of cases; typical error ±2.1 pp. The biggest miss was for 2020: IMF, April 2019 expected 4.8%, the outcome was −5.5%.
GDP growth: latest IMF forecast (IMF, April 2026): 2026 — 4.7%, 2028 — 4.3%, 2031 — 4.3%.
Inflation: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.6 pp below the forecast; below it in 64% of cases; typical error ±1.4 pp. The biggest miss was for 2009: IMF, October 2008 expected 4.7%, the outcome was 0.6%.
Inflation: latest IMF forecast (IMF, April 2026): 2026 — 1.9%, 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
30.3M
35.1M
+16%
UN 2000
2023
23 years
30.6M
35.1M
+14.6%
UN 2002
2023
21 years
32.7M
35.1M
+7.3%
UN 2004
2023
19 years
32.6M
35.1M
+7.9%
UN 2006
2023
17 years
33.1M
35.1M
+6.1%
UN 2008
2023
15 years
33.1M
35.1M
+6.1%
UN 2010
2023
13 years
34.3M
35.1M
+2.4%
UN 2012
2023
11 years
34.1M
35.1M
+2.9%
UN 2015
2023
8 years
33.6M
35.1M
+4.7%
UN 2017
2023
6 years
34.1M
35.1M
+2.9%
UN 2019
2023
4 years
33.6M
35.1M
+4.6%
UN 2022
2023
1 year
34.3M
35.1M
+2.4%
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
492k
489k
−0.6%
UN 2000
2015–2020
18 years
491k
489k
−0.4%
UN 2002
2015–2020
16 years
550k
489k
−11.2%
UN 2004
2015–2020
14 years
530k
489k
−7.8%
UN 2006
2015–2020
12 years
538k
489k
−9.2%
UN 2008
2015–2020
10 years
537k
489k
−9%
UN 2010
2015–2020
8 years
595k
489k
−17.9%
UN 2012
2015–2020
6 years
548k
489k
−10.8%
UN 2015
2015–2020
2 years
521k
489k
−6.1%
UN 2017
2015–2020
0 years
540k
489k
−9.5%
UN 2022
2024
2 years
505k
415k
−17.8%
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
2.10
1.86
−11.5%
UN 2000
2015–2020
18 years
2.10
1.86
−11.5%
UN 2002
2015–2020
16 years
2.28
1.86
−18.4%
UN 2004
2015–2020
14 years
2.19
1.86
−15.2%
UN 2006
2015–2020
12 years
2.17
1.86
−14.5%
UN 2008
2015–2020
10 years
2.16
1.86
−14%
UN 2010
2015–2020
8 years
2.45
1.86
−24%
UN 2012
2015–2020
6 years
1.91
1.86
−2.5%
UN 2015
2015–2020
2 years
1.90
1.86
−1.9%
UN 2017
2015–2020
0 years
2.01
1.86
−7.5%
UN 2022
2024
2 years
1.76
1.60
−9.3%
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
2.1 pp
50%
Inflation
36
−0.6 pp
1.4 pp
64%
Unemployment rate
27
+0.2 pp
0.4 pp
37%
Government gross debt
28
+1.5 pp
2.9 pp
36%
All indicators
Demography
Population
35.1M persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.