7 years old now in 2024 - what year born?

Today, 15 October 2024 if a person is 7 years old now, what year was he born? See below:

If 7 years old, year of birth is:
2016 or 2017*

*It depends on whether he was born before or after 1 January 2017.

If now 7 years and his year of birth 2016 if he was born after 15 October 2016 until 31 december 2016 inclusively, and his year of birth is 2017 if he was born from 1 January 2017 to 15 October 2017.

Other examples:

If now 5 years, year of birth 2018 or 2019
If now 13 years, year of birth 2010 or 2011
If now 25 years, year of birth 1998 or 1999
If now 69 years, year of birth 1954 or 1955

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