Note that the template provides an age range if a year and not a full date is given: during the year 2015, someone born in 2000 is either 14 or 15 years old, depending on whether they have passed their birth date in the later year. If no end date is given then the current date is used.
To display approximate birth year and current age given a particular date (e.g. when a dated reference mentions the age of a person), only works for living people.
To display approximate birth year and current age given several particular dates (e.g. when a dated reference mentions the age of a person), only works for living people.
