And 2% of a big number is a big number. People too often misunderstand what percentages really are about and think a low percentage is akin to nothing.

In 2015 there were an estimated 2bn desktop computers actively in use in the world. That means 40m pcs running linux - a small proportion but a big number in its own right. It's roughly equivalent to the entire population of Canada.

Both stats are from worldometers.info, and there are likely more than 2bn Pcs in use now.