The current list has been cobbled together from various sources, because IATA charges over $5K for the definitive version, and I'm not really keen on spending that

Someone has loaded a booking with the tax code CP. My quick research hasn't turned up a result. I'm working on getting a more detailed list, but so far, I don't have that one. Whoever had that booking with the CP tax, if you wouldn't mind either posting or sending me a PM to let me know what it was (there should be a description on your Aeroplan booking confirmation), it would be appreciated