7 years old now in 2022 - what year born?

Today, 27 September 2022 if a person is 7 years old now, what year was he born? See below:

If 7 years old, year of birth is:
2014 or 2015*

*It depends on whether he was born before or after 1 January 2015.

If now 7 years and his year of birth 2014 if he was born after 27 September 2014 until 31 december 2014 inclusively, and his year of birth is 2015 if he was born from 1 January 2015 to 27 September 2015.

Other examples:

If now 4 years, year of birth 2017 or 2018
If now 13 years, year of birth 2008 or 2009
If now 20 years, year of birth 2001 or 2002
If now 82 years, year of birth 1939 or 1940

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