Joined a Stat Board with 2 years experience.

MX13 Equivalent?

2014: Lower $4K, Grade C (Default?)
2015: Lower $5K, Grade B (Increment plus salary adjustment)
2016: Mid $5K, Grade B

Anyone knows when I will be promoted? I got feedback say I lacking some qualities although my work is recognised and good. But I feel extremely unbalance right now because I have been working for 5 years, and everyone my age who newly joins is always 1 rank higher than me. Or is it because of my results? Just pass from local uni only.