It took me more than a year to reach green-belt.
I also do not kick above the waist.
I'd post a video if I could so you can judge my kata.lol.

Ed has it right.

I agree, its been about 10 months for me and I'm going to be testing for Orange Belt soon. Well, I guess it is only one class a week. My main instructor is also my high school principal and he has a roughly 30 minute class, every day, all year available for 11th and 12th graders. I'm in 10th grade, so I can't take it yet, although a few lucky students in my grade got in somehow this year.
We're twins and we share this account. We are both currently a Green belt in Tae Kwon Do.