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): 5.82 in 1950 → 4.19 in 2023 (−28%). Peak: 7.26 in 1981; the latest value is 42% lower. The trend broke around 1984 and 2013: +0.05 → −0.05 → −0.17 a year.
Births: 183k in 1950 → 729k in 2023 (×4). The trend broke around 1988 and 2015: +5.96k → +13.5k → −5.77k a year.
Population: 4.21M in 1950 → 23M in 2023 (×5.5). The trend broke around 1978 and 2001: +82.1k → +243k → +497k a year.
Internet: 0% in 1990 → 28.3% in 2024 (+28 pp). Threshold: above 10% since 2020. Fastest growth in 2019–2024: 9.3% → 28.3%.
Urban share: 5% in 1960 → 28.9% in 2025 (+24 pp). The trend broke around 1977 and 2011: +0.1 → +0.52 → +0.28 a year.
GDP per person (PPP): 1,108 PPP dollars in 1990 → 2,625 PPP dollars in 2025 (+137%).
GDP growth: on average 3.5% in the 1980s, 5.1% in the 1990s, 5.3% in the 2000s, 6.0% in the 2010s, 3.7% in the 2020s. Lowest: −1.2% in 1983; highest: 11.3% in 1985.
Inflation: on average 5.0% in the 1980s, 4.6% in the 1990s, 2.9% in the 2000s, 0.9% in the 2010s, 4.9% in the 2020s. Lowest: −3.2% in 2019; highest: 24.7% in 1994.
What changed at the same time
The fastest decline of "Fertility (TFR)" was in 2012–2022: 5.79 → 4.28. Over the same years: births 726k → 721k; population 17.2M → 22.5M; internet 3.7% → 25.4%; urban share 24.8% → 27.3%; GDP per person (PPP) 2,004 PPP dollars → 2,469 PPP dollars; GDP growth 6.5% → 1.6%; inflation 3.8% → 13.8%.
How the indicators relate
Fertility (TFR) and internet (1990–2023, 29 years): levels are strongly related, in opposite directions (r = −0.91); year-to-year changes show no reliable link (r = 0.20). This looks like a shared trend: both change over time, but not in step from year to year. Changes line up best with a 2 years shift: "Fertility (TFR)" moves first, then "Internet" (r = −0.67).
Fertility (TFR) and urban share (1960–2023, 64 years): levels are strongly related, in opposite directions (r = −0.75); year-to-year changes show no reliable link (r = 0.31). 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 = −0.98); year-to-year changes show no reliable link (r = 0.01). 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 10 of 11 revisions (1998–2022) and above in 1; median gap −4.3%.
The UN 1998 projection expected this level (4.19) already around 2020: reality is 3 years behind it.
The UN 2022 projection expected today's level (4.19, 2023) only around 2028: reality is 5 years ahead of it.
Fertility (TFR): UN 2024 projection (medium): 2050 — 2.61 (−38% vs 2023), 2100 — 1.95 (−53% vs 2023); low variant for 2100: 1.45.
Births: past UN projections. The outcome was below the projection in 10 of 11 revisions (1998–2022) and above in 1; median gap −5.7%.
The UN 2000 projection expected this level (729k) already around 2011: reality is 12 years behind it.
The UN 2012 projection expected this level (729k) already around 2016: reality is 7 years behind it.
Births: UN 2024 projection (medium): 2050 — 802k (+10% vs 2023), 2100 — 667k (−8% vs 2023); low variant for 2100: 309k.
Population: past UN projections. The outcome was below the projection in 5 of 12 revisions (1998–2022) and above in 7; median gap +1.3%.
The UN 1998 projection expected today's level (23M, 2023) only around 2025: reality is 2 years ahead of it.
The UN 2022 projection expected this level (23M) already around 2022: reality is 1 year behind it.
Population: UN 2024 projection (medium): 2050 — 37.3M (+62% vs 2023), 2100 — 49.9M (+117% vs 2023); low variant for 2100: 34M.
GDP growth: IMF next-year forecasts (34 editions, 2007–2023). On average the outcome was 0.6 pp below the forecast; below it in 65% of cases; typical error ±1.8 pp. The biggest miss was for 2010: IMF, April 2009 expected 4.1%, the outcome was 8.4%.
GDP growth: latest IMF forecast (IMF, April 2026): 2025 — 5%, 2027 — 4.8%, 2031 — 4.9%.
Inflation: IMF next-year forecasts (34 editions, 2007–2023). On average the outcome was 0.5 pp above the forecast; below it in 62% of cases; typical error ±2.6 pp. The biggest miss was for 2022: IMF, April 2021 expected 2.6%, the outcome was 13.8%.
Inflation: latest IMF forecast (IMF, April 2026): 2025 — −0.6%, 2027 — 2.1%, 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
22.2M
23M
+3.5%
UN 2000
2023
23 years
23.8M
23M
−3.1%
UN 2002
2023
21 years
23.2M
23M
−0.9%
UN 2004
2023
19 years
22M
23M
+4.7%
UN 2006
2023
17 years
22.6M
23M
+1.7%
UN 2008
2023
15 years
23.6M
23M
−2.6%
UN 2010
2023
13 years
24.1M
23M
−4.5%
UN 2012
2023
11 years
22.2M
23M
+3.5%
UN 2015
2023
8 years
22.7M
23M
+1.7%
UN 2017
2023
6 years
22.7M
23M
+1.4%
UN 2019
2023
4 years
22.7M
23M
+1.3%
UN 2022
2023
1 year
23.3M
23M
−1%
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
716k
737k
+3%
UN 2000
2015–2020
18 years
825k
737k
−10.7%
UN 2002
2015–2020
16 years
836k
737k
−11.8%
UN 2004
2015–2020
14 years
782k
737k
−5.7%
UN 2006
2015–2020
12 years
758k
737k
−2.7%
UN 2008
2015–2020
10 years
800k
737k
−7.8%
UN 2010
2015–2020
8 years
839k
737k
−12.2%
UN 2012
2015–2020
6 years
741k
737k
−0.5%
UN 2015
2015–2020
2 years
748k
737k
−1.5%
UN 2017
2015–2020
0 years
745k
737k
−1%
UN 2022
2023
1 year
801k
729k
−9%
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
4.47
5.01
+12.1%
UN 2000
2015–2020
18 years
5.69
5.01
−11.9%
UN 2002
2015–2020
16 years
5.64
5.01
−11.1%
UN 2004
2015–2020
14 years
5.50
5.01
−8.8%
UN 2006
2015–2020
12 years
5.09
5.01
−1.5%
UN 2008
2015–2020
10 years
5.06
5.01
−1%
UN 2010
2015–2020
8 years
5.53
5.01
−9.4%
UN 2012
2015–2020
6 years
5.22
5.01
−3.9%
UN 2015
2015–2020
2 years
5.24
5.01
−4.3%
UN 2017
2015–2020
0 years
5.23
5.01
−4.2%
UN 2022
2023
1 year
4.57
4.19
−8.3%
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
34
−0.6 pp
1.8 pp
65%
Inflation
34
+0.5 pp
2.6 pp
62%
Government gross debt
26
+0.3 pp
3.3 pp
46%
All indicators
Demography
Population
23M persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.