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): 6.73 in 1950 → 1.82 in 2023 (−73%). Threshold: below 2.1 since 2019. The trend broke around 1966 and 1987: −0.01 → −0.13 → −0.06 a year.
Births: 158k in 1950 → 270k in 2023 (+71%). Peak: 334k in 2011; the latest value is 19% lower. The trend broke around 1982 and 2009: +4.5k → +1.15k → −4.45k a year.
Population: 3.52M in 1950 → 18M in 2023 (×5.1).
Internet: 0% in 1990 → 77.2% in 2024 (+77 pp). Thresholds: above 10% since 2007, above 50% since 2016. Fastest growth in 2007–2012: 10.8% → 35.1%.
Urban share: 34.7% in 1960 → 63.4% in 2025 (+29 pp). Threshold: above 50% since 1984. The trend broke around 1972 and 1998: +0.46 → +0.8 → +0.1 a year.
GDP per person (PPP): 9,105 PPP dollars in 1990 → 14,319 PPP dollars in 2025 (+57%). The trend broke around 2003 and 2014: +32 → +364 → +30 a year.
GDP growth: on average 2.4% in the 1980s, 2.5% in the 1990s, 3.9% in the 2000s, 3.6% in the 2010s, 1.6% in the 2020s. Lowest: −9.2% in 2020; highest: 10.5% in 1988.
Inflation: on average 34.0% in the 1980s, 39.0% in the 1990s, 17.8% in the 2000s, 2.6% in the 2010s, 1.3% in the 2020s. Lowest: −0.3% in 2020; highest: 96.1% in 2000.
What changed at the same time
The fastest decline of "Fertility (TFR)" was in 1970–1980: 6.14 → 4.73. Over the same years: births 254k → 287k; population 6.16M → 8.17M; urban share 39.3% → 47%; GDP growth 4.9% (1980); inflation 13% (1980); no data for the others in those years.
Over the last 10 years (2013–2023): fertility (TFR) 2.36 → 1.82; births 311k → 270k; population 15.8M → 18M; internet 40.3% → 72.7%; urban share 62.9% → 63.1%; GDP per person (PPP) 13,689 PPP dollars → 14,321 PPP dollars; GDP growth 7.2% → 1.8%; inflation 2.7% → 2.2%.
How the indicators relate
Fertility (TFR) and internet (1990–2023, 33 years): levels are strongly related, in opposite directions (r = −0.95); year-to-year changes show no reliable link (r = −0.12). 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 = −0.42). 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 = −0.94); year-to-year changes show no reliable link (r = 0.06). 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 11 of 11 revisions (1998–2022) and above in none; median gap −5.8%.
The UN 2002 projection did not expect today's level (1.82, 2023) before its horizon ended (2047).
The UN 2022 projection expected today's level (1.82, 2023) only around 2044: reality is 21 years ahead of it.
Fertility (TFR): UN 2024 projection (medium): 2050 — 1.68 (−8% vs 2023), 2100 — 1.65 (−9% vs 2023); low variant for 2100: 1.15.
Births: past UN projections. The outcome was below the projection in 4 of 11 revisions (1998–2022) and above in 7; median gap +0.8%.
The UN 2002 projection expected this level (270k) already around 2022: reality is 1 year behind it.
The UN 2010 projection expected today's level (270k, 2023) only around 2028: reality is 5 years ahead of it.
Births: UN 2024 projection (medium): 2050 — 228k (−16% vs 2023), 2100 — 156k (−42% vs 2023); low variant for 2100: 54.1k.
Population: past UN projections. The outcome was below the projection in 5 of 12 revisions (1998–2022) and above in 7; median gap +3.1%.
The UN 1998 projection expected today's level (18M, 2023) only around 2027: reality is 4 years ahead of it.
The UN 2019 projection expected this level (18M) already around 2021: reality is 2 years behind it.
Population: UN 2024 projection (medium): 2050 — 21.3M (+19% vs 2023), 2100 — 19.1M (+6% vs 2023); low variant for 2100: 12.7M.
GDP growth: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.9 pp above the forecast; below it in 39% of cases; typical error ±3.6 pp. The biggest miss was for 2017: IMF, April 2016 expected −4.3%, the outcome was 6%.
GDP growth: latest IMF forecast (IMF, April 2026): 2026 — 2.5%, 2028 — 2.6%, 2031 — 3%.
Inflation: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.2 pp above the forecast; below it in 53% of cases; typical error ±1.2 pp. The biggest miss was for 2008: IMF, October 2007 expected 2.3%, the outcome was 8.4%.
Inflation: latest IMF forecast (IMF, April 2026): 2026 — 2.9%, 2028 — 1.5%, 2031 — 1.5%.
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
17.4M
18M
+3.1%
UN 2000
2023
23 years
17.4M
18M
+3.1%
UN 2002
2023
21 years
16.4M
18M
+9.5%
UN 2004
2023
19 years
16.5M
18M
+8.9%
UN 2006
2023
17 years
15.8M
18M
+13.8%
UN 2008
2023
15 years
15.8M
18M
+13.8%
UN 2010
2023
13 years
16.9M
18M
+6.7%
UN 2012
2023
11 years
18.1M
18M
−0.7%
UN 2015
2023
8 years
18M
18M
−0.3%
UN 2017
2023
6 years
18M
18M
−0.3%
UN 2019
2023
4 years
18.3M
18M
−1.9%
UN 2022
2023
1 year
18.2M
18M
−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
292k
295k
+0.8%
UN 2000
2015–2020
18 years
292k
295k
+0.8%
UN 2002
2015–2020
16 years
277k
295k
+6.4%
UN 2004
2015–2020
14 years
282k
295k
+4.6%
UN 2006
2015–2020
12 years
270k
295k
+9.2%
UN 2008
2015–2020
10 years
270k
295k
+9.1%
UN 2010
2015–2020
8 years
289k
295k
+1.9%
UN 2012
2015–2020
6 years
327k
295k
−9.9%
UN 2015
2015–2020
2 years
330k
295k
−10.9%
UN 2017
2015–2020
0 years
330k
295k
−10.8%
UN 2022
2023
1 year
299k
270k
−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
2015–2020
20 years
2.19
2.10
−4.1%
UN 2000
2015–2020
18 years
2.19
2.10
−4.1%
UN 2002
2015–2020
16 years
2.19
2.10
−4.1%
UN 2004
2015–2020
14 years
2.22
2.10
−5.7%
UN 2006
2015–2020
12 years
2.22
2.10
−5.7%
UN 2008
2015–2020
10 years
2.23
2.10
−5.8%
UN 2010
2015–2020
8 years
2.24
2.10
−6.4%
UN 2012
2015–2020
6 years
2.43
2.10
−13.7%
UN 2015
2015–2020
2 years
2.44
2.10
−14.2%
UN 2017
2015–2020
0 years
2.44
2.10
−14.2%
UN 2022
2023
1 year
2.00
1.82
−8.6%
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
+0.9 pp
3.6 pp
39%
Inflation
36
+0.2 pp
1.2 pp
53%
Unemployment rate
29
−1.2 pp
1.3 pp
86%
Government gross debt
25
+4.7 pp
6.3 pp
28%
All indicators
Demography
Population
18M persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.