We publish a new set of figures each week and keep the old ones. This is the index: what we recorded, when, and what moved. The numbers themselves live on the market pages, which is where the full history is kept rather than being split across a page per week.
A weekly figure is worth more as one record that grows than as fifty-two pages that each go stale. Every reading stays on the page for its own topic, so gold holds every gold reading we have ever taken rather than scattering them across a year of dated posts. This index is the way in, not a copy of them.
