In Canada, aside from the mint's recent habit of issuing "commemorative" quarters (and less frequently other coins) into circulation with the flimsiest of excuses, our coinage has been extremely stable. The biggest changes I can think of (ignoring the occasional update to our monarch's portrait and the introduction of the toonie in 1996) are changing what picture of the Bluenose is used on our dime. Doing some research, I now discover that we only have "loonies" ($1 coins with a common loon on the reverse) because the Royal Canadian Mint somehow managed to lose the dies to the Voyageur Dollar.
Actually, the above paragraph is not quite true. Though our dies seem to be cast in platinum-iridium, the material, thickness, and edge of Canada's coins is just now settling down.
Actually, the above paragraph is not quite true. Though our dies seem to be cast in platinum-iridium, the material, thickness, and edge of Canada's coins is just now settling down.