Canada Post, Consignia (Royal Mail), Posti Finland and La Poste supplied the percentages of delivery and mail processing costs to us.
Percentages of mail processing costs were supplied by the Canada Post.
Not an airtight argument (all anti-discrimination laws pick and choose among protected classes), but a cleverly textualist one--and one that seems to have helped convince a majority of the court to strike down the amendment, despite a lack of helpful precedent.