how many percent of citizens like Japan use your project as a means of payment?
to determine the exact number of citizens is impossible for one of the reasons is the decentralization and privacy of the user. why do you need to know this quantity?
this is the main factor in the success of the project. Now the most important thing is the number of active users.
the success of the project depends on the quality of the project, the quantity is not the most important thing. the main thing is that the project has money, and over time there will be many more users.