eQL - format of DATECALC function

I am try to build a file plan destruction rule using the DATECALC function but can not work out what the format needs to be to say that I want to add 5 years to the date.

START WITH Document
SELECT Id, Copies.Id
WHERE    Projects.Project.Status  = 'F'
AND      DATECALC(DateEffective ,5,year) < $Today