Every value that could be read verbatim from a cited document, placed at the date that document was published rather than at any evaluation date. The line directly links actual observations that set a new reported record among the values shown; it neither holds a score between reports nor extends past the final record. Test versions and run conditions can differ, so this is a reported-record path, not a like-for-like trend. When no newer number could be read, the gap is marked rather than drawn through. Whether a benchmark has saturated stays a reading you make, not a score this panel prints.