Time to clear backlog is how long USCIS would need to decide every pending case if it kept deciding them at the same speed. It is not your wait: the pile includes cases on hold and cases USCIS cannot decide yet.
How to read the chart
USCIS does not publish a median processing time for this form.
Time to clear backlog
A triangle marks a quarter far off the top of the scale, such as one in which USCIS decided almost nothing; hover over or tap it for its numbers.