Unique climber is calcualted by counting climbers who attend at least one of the events in the target region/division.
The "total" number of unique climbers is calculated based on division level to prevent duplication (For example, a climber attended comps both in R11 and R12 in the season, will be counted both in R11 and R12 but only one time in D1).
Season 2025: Age category change, JR category now only has one age year (2->1) while D category has an extra age year (2->3).
Season 2026: U11 category added, category A/B/C/D each has year variance (2), category JR has has year variance (1).
Season 2026: QE->Regional quota increase (26->32).