Starting in 2000 Canadian pennies were composed of 94% steel, 1.5% nickel, 4.5% copper plating. I have a canada cent from '06 that does not stick to a magnet.
There are a few years that have non-magnetic examples out there that are fairly rare. In 2006 from what I remember, both the magnetic and non-magnetic were common.
Look under the bust of the queen for a P... If it is there, you've got a money coin P: Plated Steel Plated zinc was also used. 2006 has (If I remember correct), 6 varieties Non-Mag 'P' (money coin) Mag 'P' Non-Mag Logo Mag Logo Non-Mag Plain Mag Plain (money coin)