Change log
What changed, and when
This site will be corrected and extended as the field moves. Every change that affects a fact, a figure, a source or a page is logged here with a date and a version number, so that anyone who quoted an earlier version can see what was different.
How to read this
- Version
- Bumps on each published batch of changes. The current version is printed in the footer of every page.
- Correction
- A previously published figure, name, date or source was wrong and has been fixed.
- Update
- A figure was superseded by newer data; the old one was accurate when published.
- Addition
- New content, section, model, company or source.
Found an error? Email a correction with the page, the figure and a source. It will be logged here.