The reason for missing the final 5% is if parts content from a country is under a certain percentage, then it's insignificant and can be omitted. Otherwise these lists would be some 10+ countries long, so they just list the major sources.
But as an FYI, the remaining 5% for the Mazda5 come from various Southeast Asian countries, including Thailand, Malaysia, and a few others.
And for Canadians who may be wondering why they haven't seen these labels at dealership lots, Canada does not require parts content labels.