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): 6.06 in 1950 → 1.98 in 2023 (−67%). Threshold: below 2.1 since 2019. The trend broke around 1991 and 2009: −0.02 → −0.16 → −0.04 a year.
Births: 391k in 1950 → 574k in 2023 (+47%). Peak: 820k in 1995; the latest value is 30% lower. The trend broke around 1994: direction reversed (+11.6k → −8.64k a year).
Population: 8.4M in 1950 → 29.7M in 2023 (×3.5). The trend broke around 1977 and 2004: +220k → +448k → +172k a year.
Internet: 0% in 1990 → 46.3% in 2024 (+46 pp). Threshold: above 10% since 2012. Fastest growth in 2017–2022: 24.3% → 45.5%.
Urban share: 3.5% in 1960 → 67% in 2025 (+63 pp). Threshold: above 50% since 2007. The trend broke around 1999 and 2010: +0.69 → +3.3 → +0.31 a year.
GDP per person (PPP): 1,808 PPP dollars in 1990 → 5,277 PPP dollars in 2025 (×2.9). The trend broke around 2007: change sped up (+51 → +141 a year).
GDP growth: on average 4.1% in the 1980s, 4.9% in the 1990s, 4.1% in the 2000s, 5.0% in the 2010s, 2.7% in the 2020s. Lowest: −3% in 1983; highest: 9.7% in 1984.
Inflation: on average 10.6% in the 1980s, 9.8% in the 1990s, 5.5% in the 2000s, 7.7% in the 2010s, 5.9% in the 2020s. Lowest: 2.4% in 2001; highest: 21.1% in 1992.
What changed at the same time
The fastest decline of "Fertility (TFR)" was in 1995–2005: 4.87 → 3.12. Over the same years: births 820k → 680k; population 22.2M → 26.3M; internet 0% → 0.8%; urban share 24.1% → 45.5%; GDP per person (PPP) 2,044 PPP dollars → 2,580 PPP dollars; GDP growth 3.5% → 3.5%; inflation 7.7% → 4.5%.
Over the last 10 years (2013–2023): fertility (TFR) 2.36 → 1.98; births 620k → 574k; population 27.6M → 29.7M; internet 13.3% → 45.8%; urban share 64.1% → 66.5%; GDP per person (PPP) 3,427 PPP dollars → 4,861 PPP dollars; GDP growth 3.5% → 2%; inflation 9.9% → 7.7%.
How the indicators relate
Fertility (TFR) and internet (1990–2023, 34 years): levels are strongly related, in opposite directions (r = −0.73); 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 urban share (1960–2023, 64 years): levels are strongly related, in opposite directions (r = −0.99); year-to-year changes show no reliable link (r = −0.60). 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) (1990–2023, 34 years): levels are strongly related, in opposite directions (r = −0.89); year-to-year changes show no reliable link (r = 0.07). 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 8 of 11 revisions (1998–2022) and above in 3; median gap −14%.
The UN 1998 projection did not expect today's level (1.98, 2023) before its horizon ended (2047).
The UN 2022 projection expected today's level (1.98, 2023) only around 2024: reality is 1 year ahead of it.
Fertility (TFR): UN 2024 projection (medium): 2050 — 1.73 (−13% vs 2023), 2100 — 1.67 (−16% vs 2023); low variant for 2100: 1.17.
Births: past UN projections. The outcome was below the projection in 8 of 11 revisions (1998–2022) and above in 3; median gap −22%.
The UN 2000 projection did not expect today's level (574k, 2023) before its horizon ended (2047).
The UN 2022 projection expected today's level (574k, 2023) only around 2029: reality is 6 years ahead of it.
Births: UN 2024 projection (medium): 2050 — 433k (−25% vs 2023), 2100 — 278k (−52% vs 2023); low variant for 2100: 86.9k.
Population: past UN projections. The outcome was below the projection in 12 of 12 revisions (1998–2022) and above in none; median gap −19%.
The UN 1998 projection expected this level (29.7M) already around 2009: reality is 14 years behind it.
The UN 2019 projection expected this level (29.7M) already around 2021: reality is 2 years behind it.
Population: UN 2024 projection (medium): 2050 — 34.6M (+17% vs 2023), 2100 — 31.8M (+7% vs 2023); low variant for 2100: 19.6M.
GDP growth: IMF next-year forecasts (34 editions, 2007–2023). On average the outcome was 0.1 pp below the forecast; below it in 47% of cases; typical error ±2.2 pp. The biggest miss was for 2020: IMF, October 2019 expected 6.3%, the outcome was −2.4%.
GDP growth: latest IMF forecast (IMF, April 2026): 2025 — 4.6%, 2027 — 4.6%, 2031 — 5%.
Inflation: IMF next-year forecasts (34 editions, 2007–2023). On average the outcome was 0.3 pp above the forecast; below it in 35% of cases; typical error ±2.1 pp. The biggest miss was for 2009: IMF, April 2008 expected 4.9%, the outcome was 12.6%.
Inflation: latest IMF forecast (IMF, April 2026): 2025 — 4.1%, 2027 — 5%, 2031 — 5%.
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
37M
29.7M
−19.8%
UN 2000
2023
23 years
37.4M
29.7M
−20.7%
UN 2002
2023
21 years
36.7M
29.7M
−19%
UN 2004
2023
19 years
37.4M
29.7M
−20.7%
UN 2006
2023
17 years
37.7M
29.7M
−21.2%
UN 2008
2023
15 years
36.9M
29.7M
−19.6%
UN 2010
2023
13 years
36.7M
29.7M
−19%
UN 2012
2023
11 years
30.9M
29.7M
−3.9%
UN 2015
2023
8 years
31.1M
29.7M
−4.7%
UN 2017
2023
6 years
31.2M
29.7M
−4.9%
UN 2019
2023
4 years
30.8M
29.7M
−3.5%
UN 2022
2023
1 year
30.9M
29.7M
−3.9%
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
792k
600k
−24.3%
UN 2000
2015–2020
18 years
915k
600k
−34.5%
UN 2002
2015–2020
16 years
829k
600k
−27.7%
UN 2004
2015–2020
14 years
830k
600k
−27.7%
UN 2006
2015–2020
12 years
847k
600k
−29.2%
UN 2008
2015–2020
10 years
770k
600k
−22.1%
UN 2010
2015–2020
8 years
723k
600k
−17.1%
UN 2012
2015–2020
6 years
575k
600k
+4.3%
UN 2015
2015–2020
2 years
582k
600k
+2.9%
UN 2017
2015–2020
0 years
574k
600k
+4.4%
UN 2022
2023
1 year
613k
574k
−6.4%
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
2.74
2.15
−21.5%
UN 2000
2015–2020
18 years
3.31
2.15
−35%
UN 2002
2015–2020
16 years
2.96
2.15
−27.2%
UN 2004
2015–2020
14 years
2.75
2.15
−21.9%
UN 2006
2015–2020
12 years
2.75
2.15
−21.6%
UN 2008
2015–2020
10 years
2.50
2.15
−13.8%
UN 2010
2015–2020
8 years
2.33
2.15
−7.6%
UN 2012
2015–2020
6 years
2.11
2.15
+2.1%
UN 2015
2015–2020
2 years
2.09
2.15
+2.8%
UN 2017
2015–2020
0 years
2.08
2.15
+3.3%
UN 2022
2023
1 year
1.99
1.98
−0.2%
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
34
−0.1 pp
2.2 pp
47%
Inflation
34
+0.3 pp
2.1 pp
35%
Government gross debt
26
−0.1 pp
3.8 pp
50%
All indicators
Demography
Population
29.7M persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.