The methodology note says the 2001 restructuring was incorporated retrospectively, but I can't find documentation of exactly how the adjustment was calculated. The magnitude of the change — a 24% drop in the aggregate — is material enough that users need to understand whether we're adjusting the old series or replacing it entirely. Should we add a technical note explaining the calculation?
The forecasting model uses three-year historical data to project five years forward, which assumes that patterns will continue. But if the historical period includes an anomaly (e.g., a one-time pandemic effect), the forecast will perpetuate that anomaly. Should we either exclude anomalies or should we use explicit assumptions to override the historical pattern?