← Yoshiaki Hayashida

Aging Aligner — Korea proof

Japan as the leading indicator for population aging

Alignment uses the 65+ population share (World Bank). The overlay chart validates the time mapping only. Outcomes use share on the x-axis — Japan's historical relationship between aging level and each outcome.

Korea, Rep. 2024 ≈ Japan 2003 (lag 21y)

Anchor overlay — alignment validation only

Same unit (65+ share), one shared horizontal axis (Japan year). Follow series is lag-shifted (each follow point at follow year − lag). Top axis labels the same positions in follow calendar years. Curves cross at the aligned year; divergence after that shows whether one lag fairly summarizes the trajectory.

10%20%1940.019611960.019811980.020012000.020212020.02041Japan yearKorea, Rep. year65+ share (% of total population)JapanFollow (lag-shifted)Cross 2003 / 2024 · 19.3%

Outcomes — what Japan experienced at each aging level

Illustrative — World Bank cross-country series only. Stronger narrative outcomes arrive in Phase 2 (e-Stat / Japan-only data).

Current health expenditure (% of GDP) Illustrative (WB only)

8%10%12%17.520.022.525.027.565+ share (% of total population)% of GDPJapanFollow now (19.3%)~7.5% of GDP

Now: ~7.5% of GDP (follow at 19.3% 65+ share)

Current health expenditure (% of GDP): 7.5% → 8.1% (+0.6 pp, 2003–2008)

Why it matters: As populations age, health spending typically rises as a share of GDP. Japan's path shows how fiscal pressure builds once the 65+ share crosses key thresholds.

  • By Korea, Rep. 2024 (≈ Japan 2003) → ~7.5% of GDP
  • By Korea, Rep. 2029 (≈ Japan 2008) → ~8.1% of GDP
  • By Korea, Rep. 2034 (≈ Japan 2013) → ~10.7% of GDP

Life expectancy at birth Illustrative (WB only)

70.075.080.010.015.020.025.065+ share (% of total population)YearsJapanFollow now (19.3%)~81.9 years

Now: ~81.9 years (follow at 19.3% 65+ share)

Life expectancy at birth: 81.76 → 82.59 years (+0.83, 2003–2008)

Why it matters: Longer lives are a direct outcome of aging societies and drive demand for chronic care, pensions, and later-life services.

  • By Korea, Rep. 2024 (≈ Japan 2003) → ~81.9 years
  • By Korea, Rep. 2029 (≈ Japan 2008) → ~82.6 years
  • By Korea, Rep. 2034 (≈ Japan 2013) → ~83.3 years

Hospital beds (per 1,000 people) Illustrative (WB only)

10.012.014.010.015.020.025.065+ share (% of total population)Beds per 1,000 peopleJapanFollow now (19.3%)~14.2 per 1,000

Now: ~14.2 per 1,000 (follow at 19.3% 65+ share)

Hospital beds (per 1,000 people): 14.26 → 13.70 per_1000 (-0.56, 2003–2008)

Why it matters: Hospital capacity per capita reflects how health systems scaled to serve an older population — relevant for healthcare real estate and REIT investors.

  • By Korea, Rep. 2024 (≈ Japan 2003) → ~14.2 per 1,000
  • By Korea, Rep. 2029 (≈ Japan 2008) → ~13.7 per 1,000
  • By Korea, Rep. 2034 (≈ Japan 2013) → ~13.3 per 1,000

Peer follow countries on the same Japan timeline

Country Year ≈ Japan Lag
Korea, Rep.2024200321Korea, Rep. 2024 ≈ Japan 2003 (lag 21y)
Taiwan———Taiwan — no anchor data (World Bank does not cover this economy)
China2024199529China 2024 ≈ Japan 1995 (lag 29y)
Thailand2024199628Thailand 2024 ≈ Japan 1996 (lag 28y)