A separate column lists the gross revenue adjusted for ticket price inflation in 2021, based on data from the Motion Picture Producers Association of Japan [ja] (MPPAJ).
The adjusted gross revenue is calculated by multiplying the total number of admissions by the average 2021 ticket price (¥1,410).
[19] Admissions better reflect the popularity of older films, since they are less susceptible to the effects of inflation.
This mainly affects films released prior the 1990s, as there has been very little Japanese ticket price inflation since the 1990s.
Where the number of admissions is unknown, they are estimated by dividing the nominal gross revenue by the average ticket price in the year of release (or the distributor rentals by the average rental earnings per ticket) to provide an estimate.