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): 7.84 in 1950 → 3.31 in 2023 (−58%). The trend broke around 1989: change sped up (−0.03 → −0.14 a year).
Births: 45.7k in 1950 → 146k in 2023 (×3.2). The trend broke around 1980 and 1996: +0.65k → +3.1k → +1.39k a year.
Population: 945k in 1950 → 5.41M in 2023 (×5.7). The trend broke around 1986: change sped up (+44.3k → +96.3k a year).
Internet: 0% in 1990 → 86.6% in 2023 (+87 pp). Thresholds: above 10% since 2005, above 50% since 2014. Fastest growth in 2004–2009: 4.4% → 32.2%.
Urban share: 44.2% in 1960 → 87.4% in 2025 (+43 pp). Thresholds: above 50% since 1966, above 75% since 2002. The trend broke around 2000 and 2007: +0.62 → +1.6 → +0.23 a year.
GDP per person (PPP): 3,967 PPP dollars in 1994 → 4,272 PPP dollars in 2025 (+8%). Peak: 6,464 PPP dollars in 2016; the latest value is 34% lower. The trend broke around 2003 and 2017: −6.8 → +175 → −275 a year.
GDP growth: on average 9.1% in the 1990s, 3.6% in the 2000s, 4.3% in the 2010s, −4.8% in the 2020s. Lowest: −22.9% in 2024; highest: 21.9% in 2004.
Inflation: on average 6.2% in the 1990s, 4.1% in the 2000s, 1.6% in the 2010s, 12.4% in the 2020s. Lowest: −0.7% in 2020; highest: 53.7% in 2024.
What changed at the same time
The fastest decline of "Fertility (TFR)" was in 1993–2003: 6.50 → 5.06. Over the same years: births 108k → 124k; population 2.43M → 3.4M; internet 4.1% (2003); urban share 66.5% → 77.3%; GDP per person (PPP) 3,967 PPP dollars → 3,789 PPP dollars; GDP growth 14% (2003); inflation 4.4% (2003).
Over the last 10 years (2013–2023): fertility (TFR) 4.05 → 3.31; births 142k → 146k; population 4.32M → 5.41M; internet 46.6% → 86.6%; urban share 84.8% → 86.9%; GDP per person (PPP) 6,142 PPP dollars → 5,562 PPP dollars; GDP growth 4.7% → −1%; inflation 1.7% → 5.9%.
How the indicators relate
Fertility (TFR) and internet (1990–2023, 24 years): levels are strongly related, in opposite directions (r = −0.91); year-to-year changes show no reliable link (r = 0.27). 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 = −0.97); year-to-year changes show no reliable link (r = −0.30). 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) (1994–2023, 30 years): levels are strongly related, in opposite directions (r = −0.82); 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 9 of 10 revisions (2000–2022) and above in 1; median gap −5%.
The UN 2000 projection expected today's level (3.31, 2023) only around 2032: reality is 9 years ahead of it.
The UN 2022 projection expected today's level (3.31, 2023) only around 2025: reality is 2 years ahead of it.
Fertility (TFR): UN 2024 projection (medium): 2050 — 2.34 (−29% vs 2023), 2100 — 1.82 (−45% vs 2023); low variant for 2100: 1.32.
Births: past UN projections. The outcome was below the projection in 9 of 10 revisions (2000–2022) and above in 1; median gap −6%.
The UN 2000 projection expected this level (146k) already around 2005: reality is 18 years behind it.
The UN 2022 projection expected this level (146k) already around 2022: reality is 1 year behind it.
Births: UN 2024 projection (medium): 2050 — 153k (+4% vs 2023), 2100 — 119k (−18% vs 2023); low variant for 2100: 49.5k.
Population: past UN projections. The outcome was below the projection in 10 of 11 revisions (2000–2022) and above in 1; median gap −6%.
The UN 2000 projection expected this level (5.41M) already around 2015: reality is 8 years behind it.
The UN 2022 projection expected today's level (5.41M, 2023) only around 2024: reality is 1 year ahead of it.
Population: UN 2024 projection (medium): 2050 — 8.45M (+56% vs 2023), 2100 — 11.5M (+112% vs 2023); low variant for 2100: 7.92M.
GDP growth: IMF next-year forecasts (7 editions, 2020–2023). On average the outcome was 9.4 pp below the forecast; below it in 100% of cases; typical error ±9.4 pp. The biggest miss was for 2024: IMF, April 2023 expected 2.7%, the outcome was −22.9%.
Inflation: IMF next-year forecasts (7 editions, 2020–2023). On average the outcome was 16.2 pp above the forecast; below it in 0% of cases; typical error ±16.2 pp. The biggest miss was for 2024: IMF, October 2023 expected 2.7%, the outcome was 53.7%.
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 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 2000
2023
23 years
6.76M
5.41M
−20%
UN 2002
2023
21 years
6.56M
5.41M
−17.6%
UN 2004
2023
19 years
6.13M
5.41M
−11.7%
UN 2006
2023
17 years
6.25M
5.41M
−13.5%
UN 2008
2023
15 years
6.25M
5.41M
−13.5%
UN 2010
2023
13 years
5.74M
5.41M
−5.8%
UN 2012
2023
11 years
5.51M
5.41M
−1.9%
UN 2015
2023
8 years
5.75M
5.41M
−6%
UN 2017
2023
6 years
5.74M
5.41M
−5.8%
UN 2019
2023
4 years
5.47M
5.41M
−1.1%
UN 2022
2023
1 year
5.37M
5.41M
+0.7%
Births
births per year
Actual
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 2000
2015–2020
18 years
190k
148k
−22%
UN 2002
2015–2020
16 years
175k
148k
−15.4%
UN 2004
2015–2020
14 years
158k
148k
−6.3%
UN 2006
2015–2020
12 years
164k
148k
−9.6%
UN 2008
2015–2020
10 years
164k
148k
−9.6%
UN 2010
2015–2020
8 years
155k
148k
−4.3%
UN 2012
2015–2020
6 years
142k
148k
+4.8%
UN 2015
2015–2020
2 years
157k
148k
−5.7%
UN 2017
2015–2020
0 years
156k
148k
−4.9%
UN 2022
2023
1 year
147k
146k
−0.1%
Total fertility rate
children per woman
Actual
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 2000
2015–2020
18 years
4.43
3.73
−15.8%
UN 2002
2015–2020
16 years
4.09
3.73
−8.7%
UN 2004
2015–2020
14 years
3.85
3.73
−3%
UN 2006
2015–2020
12 years
3.93
3.73
−5%
UN 2008
2015–2020
10 years
3.93
3.73
−5%
UN 2010
2015–2020
8 years
3.93
3.73
−5%
UN 2012
2015–2020
6 years
3.73
3.73
+0.2%
UN 2015
2015–2020
2 years
3.95
3.73
−5.4%
UN 2017
2015–2020
0 years
3.91
3.73
−4.5%
UN 2022
2023
1 year
3.38
3.31
−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
7
−9.4 pp
9.4 pp
100%
Inflation
7
+16.2 pp
16.2 pp
0%
Unemployment rate
3
−1.2 pp
1.2 pp
100%
Government gross debt
7
+5.3 pp
6 pp
14%
All indicators
Demography
Population
5.41M persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.