My calculations were based on the number of trips, not the amount of kilometers traveled. I don't think it's quite fair to compare fatalities/kilometer, as cars obviously travel much further than bikes. You're free to disagree.

Edit: And it's not 3.6% of car kilometers, it's 3.6% of the total distance traveled, whether by car (as driver and passenger), bike, public transport, walking, motorbike and so on.

2nd edit: And for clarity, accoring to [2] above, car rides (driver + passenger) made up about 75% of kilometers traveled in 2012 in Denmark