I hit puberty in grade 4, but my voice never cracked/deepened?

I had the beginnings of a mustache in grade 4, I was a head taller than everyone in my class, and that summer my voice changed slightly, but didn't get that deep. It just sounded kinda weird. Then when I was 12, I grew to around 5'11 in a massive growth spurt. I'm now 17, I shave, and I have without a doubt finished puberty by a couple of years now. However, my voice never cracked. I think it's a kinda weird voice for a guy my age, plus it's monotone and I feel it should be deeper. I cannot sing or anything of that sort as my voice only has one tone, and lacks feeling usually. Will my voice deepen or gain tone as I age?