How long do American immigrants usually have to wait eb3?

First of all, this timetable is a very complicated matter. I have a timetable analysis for the past ten years, but writing it all down will probably kill me. I can only say that EB3 has been scheduled for more than 9 years now, but after 20 16, this schedule will change, mainly because the number of applicants in 2006- 13 is very small, and the current schedule. Now many people know that this shift will be accelerated, resulting in a large number of applicants for 20 14-20 15. When the schedule reaches 20 14, it will slow down again. You can keep asking me questions.