69 years old now in 2023 - what year born?

Today, 22 March 2023 if a person is 69 years old now, what year was he born? See below:

If 69 years old, year of birth is:
1953 or 1954*

*It depends on whether he was born before or after 1 January 1954.

If now 69 years and his year of birth 1953 if he was born after 22 March 1953 until 31 december 1953 inclusively, and his year of birth is 1954 if he was born from 1 January 1954 to 22 March 1954.

Other examples:

If now 12 years, year of birth 2010 or 2011
If now 18 years, year of birth 2004 or 2005
If now 28 years, year of birth 1994 or 1995
If now 57 years, year of birth 1965 or 1966

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