10 years, the last of them is 2009. So that's 2000–2009.
2015년 11월 25일
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1999-2009
2015년 11월 25일
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2015년 11월 28일
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You use 'end in'
So the last year should be 2009
1999_2009
We usually use 'in' to state the deadline
So it should end before 2009