1998
well if you're fifteen this year, you would have to have been born in 1995 or 1994, depends what month you were born in.
1994 or 1993.
1994.
You would have been born in the year ~ 1948.
You would have been born in 1943.
You would have been born in 1935
As of 2018, you would have had to have been born in either 2001 or 2002.
Fifteen
You would of been born in the year 1919.
Whatever year you were born in
As of 2011, assuming you have already celebrated your birthday this year, you would have been born in 1968. If you have not yet celebrated your birthday, you would have been born in 1967.
If you were 8 years old, you would have been born 8 years ago. Therefore, you would have been born in the current year minus 8. For example, if the current year is 2023, you would have been born in 2015.