What is the current backlog of (a) asylum seekers awaiting status determination interviews, (b) asylum seekers who have appealed the status determination decision, and are awaiting a hearing with the refugee appeal authority, (c) asylum seekers who have submitted a review of their status determination decision to the standing committee of refugee affairs and are awaiting a decision, (d) refugees awaiting decisions on permanent residence applications and (e) foreign nationals awaiting permanent residence applications?