15 male 5'9 and i had not a big growth spurt yet. at peak i maybe gained 4 inches a year. will i get a big growth spurt soon? my voice has deepened.

Maybe: You may have already grown to close to your full height. 5'9" is actually close to "average" heigh & was actually considered tall several deacdes ago. That said, most males continue to grow slowly into their early tewnties. Every person matures at their own pace & that's something that was determined when you were concieved & there's not a lot any of us can do about how tall we are or will be.