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): 2.35 in 1950 → 1.38 in 2023 (−41%). Peak: 2.70 in 1964; the latest value is 49% lower. Thresholds: below 2.1 since 1972, below 1.5 since 2023. The trend broke around 1964 and 1978: +0.03 → −0.08 → 0 a year.
Births: 144k in 1950 → 102k in 2023 (−29%). Peak: 159k in 1964; the latest value is 36% lower. The trend broke around 1963 and 1976: +1.36k → −3.04k → −0.04k a year.
Population: 8.62M in 1950 → 11.7M in 2023 (+36%). The trend broke around 1970 and 2000: +52.6k → +18.8k → +68.1k a year.
Internet: 0% in 1990 → 95.8% in 2024 (+96 pp). Thresholds: above 10% since 1999, above 50% since 2004, above 90% since 2019. Fastest growth in 1998–2003: 7.9% → 50%.
Urban share: 65.9% in 1960 → 87.7% in 2025 (+22 pp). Threshold: above 75% since 1981.
GDP per person (PPP): 41,640 PPP dollars in 1990 → 63,488 PPP dollars in 2025 (+52%). The trend broke around 2007 and 2014: +929 → +59 → +644 a year.
GDP growth: on average 2.2% in the 1980s, 2.2% in the 1990s, 1.8% in the 2000s, 1.5% in the 2010s, 1.6% in the 2020s. Lowest: −4.8% in 2020; highest: 6.3% in 2021.
Inflation: on average 4.9% in the 1980s, 2.0% in the 1990s, 2.1% in the 2000s, 1.8% in the 2010s, 3.9% in the 2020s. Lowest: 0% in 2009; highest: 10.3% in 2022.
What changed at the same time
The fastest decline of "Fertility (TFR)" was in 1964–1974: 2.70 → 1.84. Over the same years: births 159k → 123k; population 9.34M → 9.74M; urban share 67.5% → 72.3%; no data for the others in those years.
Over the last 10 years (2013–2023): fertility (TFR) 1.75 → 1.38; births 125k → 102k; population 11.2M → 11.7M; internet 82.2% → 94.6%; urban share 85.7% → 87.6%; GDP per person (PPP) 56,263 PPP dollars → 63,042 PPP dollars; GDP growth 0.3% → 1.7%; inflation 1.2% → 2.3%.
How the indicators relate
Fertility (TFR) and internet (1990–2023, 34 years): levels are barely related (r = 0.24); year-to-year changes show no reliable link (r = 0.27).
Fertility (TFR) and urban share (1960–2023, 64 years): levels are strongly related, in opposite directions (r = −0.74); 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.
Fertility (TFR) and GDP per person (PPP) (1990–2023, 34 years): levels are barely related (r = 0.16); year-to-year changes show no reliable link (r = 0.29). Changes line up best with a 3 years shift: "GDP per person (PPP)" moves first, then "Fertility (TFR)" (r = 0.58).
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 −9.1%.
Fertility (TFR): UN 2024 projection (medium): 2050 — 1.49 (+8% vs 2023), 2100 — 1.55 (+13% vs 2023); low variant for 2100: 1.05.
Births: past UN projections. The outcome was below the projection in 6 of 11 revisions (1998–2022) and above in 5; median gap −2.7%.
The UN 1998 projection expected this level (102k) already around 2018: reality is 5 years behind it.
Births: UN 2024 projection (medium): 2050 — 104k (+2% vs 2023), 2100 — 90.9k (−11% vs 2023); low variant for 2100: 37.2k.
Population: past UN projections. The outcome was below the projection in 2 of 12 revisions (1998–2022) and above in 10; median gap +5.5%.
Population: UN 2024 projection (medium): 2050 — 11.9M (+1% vs 2023), 2100 — 11.1M (−6% vs 2023); low variant for 2100: 7.9M.
GDP growth: IMF next-year forecasts (34 editions, 2007–2023). On average the outcome was 0.3 pp below the forecast; below it in 38% of cases; typical error ±1.2 pp. The biggest miss was for 2020: IMF, April 2019 expected 1.4%, the outcome was −4.8%.
GDP growth: latest IMF forecast (IMF, April 2026): 2025 — 1%, 2027 — 1.1%, 2031 — 1.3%.
Inflation: IMF next-year forecasts (36 editions, 2007–2024). On average the outcome was 0.8 pp above the forecast; below it in 36% of cases; typical error ±1.6 pp. The biggest miss was for 2022: IMF, April 2021 expected 1.9%, the outcome was 10.3%.
Inflation: latest IMF forecast (IMF, April 2026): 2026 — 2.8%, 2028 — 2.1%, 2031 — 1.8%.
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
9.96M
11.7M
+17.6%
UN 2000
2023
23 years
10.2M
11.7M
+14.6%
UN 2002
2023
21 years
10.5M
11.7M
+11.4%
UN 2004
2023
19 years
10.6M
11.7M
+10.7%
UN 2006
2023
17 years
10.7M
11.7M
+9.3%
UN 2008
2023
15 years
11.1M
11.7M
+5.2%
UN 2010
2023
13 years
11.1M
11.7M
+5.7%
UN 2012
2023
11 years
11.5M
11.7M
+2.2%
UN 2015
2023
8 years
11.8M
11.7M
−0.4%
UN 2017
2023
6 years
11.7M
11.7M
−0.3%
UN 2019
2023
4 years
11.7M
11.7M
+0.1%
UN 2022
2023
1 year
11.7M
11.7M
+0.2%
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
102k
119k
+16.3%
UN 2000
2015–2020
18 years
95.2k
119k
+24.5%
UN 2002
2015–2020
16 years
106k
119k
+11.3%
UN 2004
2015–2020
14 years
107k
119k
+10.7%
UN 2006
2015–2020
12 years
108k
119k
+9.9%
UN 2008
2015–2020
10 years
122k
119k
−2.7%
UN 2010
2015–2020
8 years
123k
119k
−3.4%
UN 2012
2015–2020
6 years
130k
119k
−8.5%
UN 2015
2015–2020
2 years
131k
119k
−9.4%
UN 2017
2015–2020
0 years
130k
119k
−9.1%
UN 2022
2023
1 year
117k
102k
−13%
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
1.74
1.63
−5.8%
UN 2000
2015–2020
18 years
1.53
1.63
+7.2%
UN 2002
2015–2020
16 years
1.70
1.63
−3.9%
UN 2004
2015–2020
14 years
1.70
1.63
−3.9%
UN 2006
2015–2020
12 years
1.67
1.63
−2.2%
UN 2008
2015–2020
10 years
1.84
1.63
−11.4%
UN 2010
2015–2020
8 years
1.87
1.63
−12.6%
UN 2012
2015–2020
6 years
1.87
1.63
−12.6%
UN 2015
2015–2020
2 years
1.83
1.63
−10.7%
UN 2017
2015–2020
0 years
1.80
1.63
−9.1%
UN 2022
2023
1 year
1.59
1.38
−13.4%
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
−0.3 pp
1.2 pp
38%
Inflation
36
+0.8 pp
1.6 pp
36%
Unemployment rate
34
−0.6 pp
0.8 pp
82%
Government gross debt
26
+0.4 pp
5.5 pp
62%
All indicators
Demography
Population
11.7M persons, 1 July latest value, 2023
Population on 1 July. UN estimate to 2023, medium variant from 2024; past UN revisions for forecast checks.