I am a type 1 diabetic who takes care of himself. Life expectancy?

I was diagnosed at 10 years old. I am now 27 and have always done well with my diabetes. I want to live until late 70's at least. Is this possible? I have read estimates of 5-8 years lower life expectancy all the way up to 19 years less for life expectancy.

But I don't know what the right number is?
I am a type 1 diabetic who takes care of himself. Life expectancy?
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