Documents
What the numbers measure, how changes to the measurement are handled, and who publishes them. Each describes current practice.
Methodology
What the series measure, where the prices come from, how they are aggregated, and the series grammar behind every CCIR identifier.
Read →How We Publish
Who publishes the data, the independence it is published under, how versions, material changes and restatements work, and how to question a number.
Read →Methodology Change Log
The running record of versions, panel changes, and series notices. Pending changes are announced with effective date, expected effect, and a comment window.
Read →Data Terms
What may be done with the published data without asking (viewing, quotation, citation with attribution) and what requires written permission: systematic retrieval, redistribution, commercial reuse.
Read →Methodology versions
The change log entry for each version records what changed and when it took effect.
| Version | Effective | Change log |
|---|---|---|
| v2.4.0 current | 2026-09-17 | 260917-1 |
| v2.3.3 | 2026-09-11 | 260903-1 |
| v2.3.2 | 2026-08-21 | — |
| v2.3.1 | 2026-08-19 | 260819-1 |
| v2.3.0 | 2026-08-19 | 260818-1 |
| v2.2.1 | 2026-07-23 | 260715-4 |
| v2.2.0 | 2026-07-16 | 260715-3 |
| v2.1.0 | 2026-07-15 | 260710-2 |
| v2.0.0 | 2026-04-26 | 260426-1 |