If you have frequent and/or lengthy absences from Canada, enclosing a copy of your CBSA traveler history to support your application could only help. If your absences are neither that frequent or that lengthy, then I would not worry.
Provide the CIC with exactly what they request on the application. In addition, perhaps a letter from your employer stating how long you have worked in your current position could be of help. But don't send too much extra documentation. If the CIC needs anything else from you, they will contact you.
