It could only go back to 1992 or so. For most people, history is whatever is linkable or the 5% of pre-1992 stuff that is popular enough to rate a dead wiki footnote.
The Google Ngram Viewer indicates that data was indexed well before 1992, even if the resource isn’t publicly accessible [1]. This likely reflects the reality that new content often garners more attention than old content, which doesn’t align with the "pay-per-click" model of monetization.
