I was still growing after age 15, is this normal for a girl?

I was 15 when I visited my doctor. This was because I kept having leg cramps. He said I wasn't done yet because the bones plates weren't fully closed yet.

This is how my growth is like:
Age 12: 5'0
Age 13: 5'2.5
Age 14: 5'4
Age 15: 5'5
Then from ages 16 till just last week, it was an inch per year. So as of now my new height is 5'9. My new shoe size went up from 9 to 10. I want to be done already. Is this normal?
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The reason I'm asking is because I thought girls were done already between ages 14-16.
I was still growing after age 15, is this normal for a girl?
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