Hi @森山 慎也/fsi017 and welcome to the community,
Out of the box, you can't have such a report. Unfortunately Jira doesn't provide enough functionalities to be able to do that. If you want to have such a graph inside Jira, then 3rd party apps is your only hope.
Other than that you could export your issues to excel (1000 at a time) and process them there.
Thank you for your answer.
>then 3rd party apps is your only hope.Does it mean that 3rd apps can work with Jira? I want you to tell me how to do it.Or, Is there a way to get statistics for each ticket reporter in Jira Service Management?
Yes, of course they can. visit marketplace.atlassian.com
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