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): 7.25 in 1950 → 6.13 in 2023 (−15%). Peak: 7.66 in 1997; the latest value is 20% lower. The trend broke around 1976 and 2004: −0.01 → +0.02 → −0.08 a year.
Births: 112k in 1950 → 789k in 2023 (×7.1). The trend broke around 1969: change sped up (+2.73k → +8.84k a year).
Population: 2.21M in 1950 → 18.4M in 2023 (×8.3). The trend broke around 1996 and 2015: +128k → +328k → +575k a year.
Internet: 0% in 1990 → 27.9% in 2024 (+28 pp). Threshold: above 10% since 2020. Fastest growth in 2019–2024: 2.7% → 27.9%.
Urban share: 17.7% in 1960 → 55.1% in 2025 (+37 pp). Threshold: above 50% since 2018. The trend broke around 2007: change sped up (+0.32 → +1.2 a year).
GDP per person (PPP): 837 PPP dollars in 1991 → 1,404 PPP dollars in 2025 (+68%). Low: 635 PPP dollars in 1994; +121% since then. The trend broke around 2001 and 2018: −14 → +48 → −11 a year.
GDP growth: on average 3.3% in the 2010s, 2.3% in the 2020s. Lowest: −2.8% in 2020; highest: 9.5% in 2017.
Inflation: on average 2.6% in the 2010s, 5.4% in the 2020s. Lowest: 0% in 2016; highest: 6.8% in 2022.
What changed at the same time
The fastest decline of "Fertility (TFR)" was in 2013–2023: 7.14 → 6.13. Over the same years: births 614k → 789k; population 12.9M → 18.4M; internet 1.5% → 26.1%; urban share 41.3% → 54.1%; GDP per person (PPP) 1,198 PPP dollars → 1,402 PPP dollars; GDP growth 5.7% → 4.2%; inflation 2.8% → 6.2%.
How the indicators relate
Fertility (TFR) and internet (1990–2023, 27 years): levels are strongly related, in opposite directions (r = −0.86); year-to-year changes show no reliable link (r = 0.18). 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 noticeably related, in opposite directions (r = −0.54); year-to-year changes are related too (r = −0.55). Changes line up from year to year too, which is more than a shared trend.
Fertility (TFR) and GDP per person (PPP) (1991–2023, 33 years): levels are strongly related, in opposite directions (r = −0.92); year-to-year changes show no reliable link (r = −0.08). 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 0 of 11 revisions (1998–2022) and above in 11; median gap +10%.
The UN 1998 projection expected this level (6.13) already around 2008: reality is 15 years behind it.
The UN 2022 projection expected this level (6.13) already around 2022: reality is 1 year behind it.
Fertility (TFR): UN 2024 projection (medium): 2050 — 3.60 (−41% vs 2023), 2100 — 2.19 (−64% vs 2023); low variant for 2100: 1.69.
Births: past UN projections. The outcome was below the projection in 2 of 11 revisions (1998–2022) and above in 9; median gap +38%.
The UN 2000 projection expected this level (789k) already around 2019: reality is 4 years behind it.
The UN 2022 projection expected today's level (789k, 2023) only around 2025: reality is 2 years ahead of it.
Births: UN 2024 projection (medium): 2050 — 1.07M (+36% vs 2023), 2100 — 1.06M (+34% vs 2023); low variant for 2100: 566k.
Population: past UN projections. The outcome was below the projection in 3 of 12 revisions (1998–2022) and above in 9; median gap +19%.
The UN 1998 projection expected this level (18.4M) already around 2019: reality is 4 years behind it.
The UN 2022 projection expected today's level (18.4M, 2023) only around 2024: reality is 1 year ahead of it.
Population: UN 2024 projection (medium): 2050 — 37.2M (+103% vs 2023), 2100 — 67.4M (×3.7 vs 2023); low variant for 2100: 49.4M.
GDP growth: IMF next-year forecasts (13 editions, 2017–2023). On average the outcome was 1 pp below the forecast; below it in 54% of cases; typical error ±1.6 pp. The biggest miss was for 2020: IMF, April 2019 expected 3.5%, the outcome was −2.8%.
GDP growth: latest IMF forecast (IMF, April 2026): 2025 — 3%, 2027 — 3.1%, 2031 — 4.2%.
Inflation: latest IMF forecast (IMF, April 2026): 2025 — 3.7%, 2027 — 4.5%, 2031 — 3.2%.
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
20.2M
18.4M
−9.2%
UN 2000
2023
23 years
19.9M
18.4M
−7.8%
UN 2002
2023
21 years
19.7M
18.4M
−6.9%
UN 2004
2023
19 years
13.2M
18.4M
+39.1%
UN 2006
2023
17 years
13.1M
18.4M
+39.7%
UN 2008
2023
15 years
13.2M
18.4M
+38.7%
UN 2010
2023
13 years
13.4M
18.4M
+37.5%
UN 2012
2023
11 years
13.9M
18.4M
+31.6%
UN 2015
2023
8 years
13.5M
18.4M
+35.5%
UN 2017
2023
6 years
17.6M
18.4M
+4.3%
UN 2019
2023
4 years
17.3M
18.4M
+5.9%
UN 2022
2023
1 year
18.1M
18.4M
+1.2%
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
683k
696k
+2%
UN 2000
2015–2020
18 years
750k
696k
−7.2%
UN 2002
2015–2020
16 years
739k
696k
−5.8%
UN 2004
2015–2020
14 years
429k
696k
+62.4%
UN 2006
2015–2020
12 years
428k
696k
+62.8%
UN 2008
2015–2020
10 years
458k
696k
+52%
UN 2010
2015–2020
8 years
488k
696k
+42.6%
UN 2012
2015–2020
6 years
504k
696k
+38.3%
UN 2015
2015–2020
2 years
498k
696k
+39.9%
UN 2017
2015–2020
0 years
644k
696k
+8.1%
UN 2022
2023
1 year
775k
789k
+1.8%
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
5.00
6.72
+34.3%
UN 2000
2015–2020
18 years
6.08
6.72
+10.5%
UN 2002
2015–2020
16 years
6.13
6.72
+9.6%
UN 2004
2015–2020
14 years
5.14
6.72
+30.8%
UN 2006
2015–2020
12 years
5.14
6.72
+30.8%
UN 2008
2015–2020
10 years
5.75
6.72
+16.9%
UN 2010
2015–2020
8 years
6.23
6.72
+7.8%
UN 2012
2015–2020
6 years
6.10
6.72
+10.1%
UN 2015
2015–2020
2 years
6.12
6.72
+9.7%
UN 2017
2015–2020
0 years
6.12
6.72
+9.7%
UN 2022
2023
1 year
6.10
6.13
+0.6%
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
13
−1 pp
1.6 pp
54%
Inflation
4
+2 pp
2 pp
0%
All indicators
Demography
Population
18.4M persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.