General :: Adding Record To Multiple Tables

I have a main table with subject id and other fields. I also have 16 other tables which have questionnaire information at 17 different timepoints. In those tables, the subject id is the only connected field between the main table and 17 different years. When I add a new record (by subject id) on the main table, I want it to add that same subject id to the 17 other tables because that subject id will eventually get all 17 years worth of data. But even using subforms, it will not add a new subject to the other tables unless I add some sort of information such as (date received) into the subform.