Linux also surpassed 10% in my country, Greece (10.72%).
I prepared a couple of old laptops I had around recently, to gift to my niece and cousin, and I put Debian with XFce in both of them. Worked great. And I think that's why Linux is big in Greece. Consider that when someone buys a car here, they use it until the end of its life. Very rarely they sell cars to get something new. The average car is 15 years old in Greece. I think that's the deal with old laptops and computers too: people try to extend the lives of their machines.