Total unowned issues(2.5.3)

How many open tickets currently have no assignee, counting both those that never had one and those whose assignee was later removed. A ticket counts as open when the latest status its events record is in Jira's To Do or In Progress category, and each ticket counts once, under its current project; deleted tickets, tickets in a project moved to the trash or deleted, and tickets whose events record no status that maps to a Jira status category are left out, so this is a live queue rather than a running total.