Research on changing historical series, statistical vintages, release timing and the difference between what is known now and what was knowable at an earlier date.
GASTAT's comprehensive update raised the estimated level of 2023 GDP at current prices by 14.1%. The case shows why the official source alone is not enough: the statistical vintage can change both the measured size and composition of an economy.
First-release versus later-vintage GDP histories across Morocco, Jordan and Saudi Arabia, with direct tests of whether superseded evidence remains recoverable.
Read release →Methods for retaining revision histories and reconstructing public information sets.
Methods →Official release sources and public Lab revision records.
A growing case-level archive for country × indicator × vintage × release × revision, starting with the Saudi 2023 GDP comprehensive revision.
Open archive →