17 years old now in 2023 - what year born?

Today, 26 March 2023 if a person is 17 years old now, what year was he born? See below:

If 17 years old, year of birth is:
2005 or 2006*

*It depends on whether he was born before or after 1 January 2006.

If now 17 years and his year of birth 2005 if he was born after 26 March 2005 until 31 december 2005 inclusively, and his year of birth is 2006 if he was born from 1 January 2006 to 26 March 2006.

Other examples:

If now 12 years, year of birth 2010 or 2011
If now 16 years, year of birth 2006 or 2007
If now 28 years, year of birth 1994 or 1995
If now 75 years, year of birth 1947 or 1948

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