Free sample. This preview shows 1 of 1 indicator(s) and 3 of 20 economies, and omits the share, trend, momentum and full year-by-year sections. The complete report is at GET /report/macro-inflation for a small USDC payment over x402, as HTML, JSON or CSV. A free machine-readable cross-section is at GET /preview/macro-inflation.

Inflation Rate Comparison Report — free sample

Generated: 2026-09-21T08:15:25.666Z  |  Range: 2015–2025  |  Source: World Bank Open Data (CC BY 4.0)

Key findings

This report covers 3 economies and 1 indicator over 2015–2025, containing 32 published observations (97% of the 33 requested year × economy cells). Every figure is reproduced from World Bank Open Data and recomputed into growth, share, trend-fit, momentum, volatility, concentration and data-quality views. Values are also available as JSON and CSV from the same endpoint.
IndicatorRank 1Latest valueCAGR / period avg TrendEconomiesLatest yr
Inflation, consumer prices (annual %)Japan3.17 1.28%+0.31 pp32025

Inflation, consumer prices (annual %)

Latest reading is highest in Japan at 3.17% and lowest in China at 0.06%. Period average is 1.87%, with a cross-economy spread of 3.11 percentage points. This is a rate of change rather than a level, so compound growth and a growth index are not defined for it; the trend is reported in percentage points per year. Fitted trend is steepest upward in United States (+0.49 pp/yr, percentage points per year, R² 0.433) and weakest in China (-0.18 pp/yr, R² 0.405). Largest acceleration — last three years against the three before — is China at -64.4% percentage points. The largest covered value is 53.2× the smallest. 3 economies covered; latest observation year 2025. Note: for this indicator a higher value is adverse, so a rising series is not a positive signal.

Latest reading, by economy

Japan 3.17 United States 2.95 China 0.060

Ranked detail

Group average over the period: 1.87%. Cross-economy spread of the latest reading: 3.11 percentage points. A rate of change has no compound growth rate, so none is reported.
#EconomyLatest Period avgTrend pp/yr PctileTrend
1 Japan 3.17 1.28+0.31 100
2 United States 2.95 2.88+0.49 67
3 China 0.060 1.44-0.18 33
Period average is the mean of the annual readings across the covered years. Trend pp/yr is the ordinary-least-squares slope in percentage points per year — the unit this indicator is already measured in. Percentile ranks this economy within the covered group.

Trend and dynamics

EconomyTrend pp/yrTrend R² MomentumHalf-period shiftVolatility Latest YoYPeak / trough yrOutlier years
Japan +0.31 0.56 -67.0% +11.3% 504.3 +15.8% 2023 / 2021 —
United States +0.49 0.43 -76.5% -206.8% 324.9 -28.4% 2022 / 2015 2016 (+963%)
China -0.18 0.41 -64.4% -39.7% 59.0 -72.7% 2019 / 2025 —
Trend is the ordinary-least-squares fit of value on year, reported with its R² — how much of the movement the straight line explains, in percentage points per year because this series is already a rate. Momentum is the mean change of the last three years minus the mean of the three before it, in percentage points. Half-period shift compares the second half of the window against the first. Volatility is the standard deviation of year-over-year change. Outlier years exceed 2.5 standard deviations from that economy's own average change.

Data quality

EconomyPublishedExpectedCoverage SpanYears behind newestMissing years
Japan 11 11 100% 2015–2025 0 —
United States 10 11 91% 2015–2024 1 2025
China 11 11 100% 2015–2025 0 —

Full year-by-year data

Economy20152016201720182019202020212022202320242025
Japan0.795-0.1270.4840.9890.469-0.025-0.2332.503.272.743.17
United States0.1191.262.132.441.811.234.708.004.122.95—
China1.442.001.592.072.902.420.9811.970.2350.2180.060
MethodologySeries are pulled from the official source API and null observations dropped. CAGR = (end/start)^(1/years) − 1. Index uses the first year of the range as 100. Trend is an OLS fit of value on year, reported as a percentage of the period mean alongside its R². Volatility = standard deviation of year-over-year percentage change (percentage points). Momentum compares the last three years against the three before. Share = economy value ÷ sum of the covered economies. HHI = sum of squared shares; its reciprocal estimates the number of evenly sized economies. Cross-indicator correlation is Pearson's r on pooled year-over-year changes.
CoverageRequested: 1 indicator(s) × 3 economies × 11 years = 33 cells; published: 32 (97.0%). Sparse indicators are declared in the Data quality section of each indicator.
FormatsThis document is the HTML delivery. Append ?format=json for the full structured payload (series plus every derived metric) or ?format=csv for the tidy long-format panel. The JSON schema is published at /schema/report.json.
LicenceData © World Bank Open Data (CC BY 4.0), attribution required. Generated by an automated pipeline; research reference only, not investment advice.
DisclaimerValues are reproduced as published by the source; some years may be estimates, nowcasts or subsequently revised figures. Correlations are descriptive statistics, not causal claims.