In fact, it is known at least through 2024. Nikkei publishes the global market share data annually (in late summer) based on reporting from industry groups (
Camera & Imaging Products Association aka CIPA, and Japan Electronics and Information Technology Industries Association aka JEITA). Canon led the MILC market in 2022, 2023 and 2024, and given their ~8% lead in 2024 it is almost certain they led it last year, as well.
According to the industry groups (to which both Canon and Sony belong), in 2024 Canon shipped 2.05M MILCs and Sony shipped 1.63M. That year, Canon also shipped 790K DSLRs, which was about 80% of the global market.
As a reality check, the link I posted to the
FujiRumors article summarizing the Nikkei report (in the other thread in which
@mimbu made the same false claim) lists Canon's ILC shipments for 2024 as 2.84M units, a number that exactly matches that in
Canon's FY2024 presentation.