typical weight for 5'8" woman?

So I just stepped on the scale the other day and my weight was 170. I usually have been floating around the 160 mark for the past 2 years, I would like to be between 155-160. I workout 3 times a week and hardly ever eat junk food. So what is the typical weight for a woman that's 5'8-5'9? I know I carry alot of my weight in my hips and now noticing around my stomach.