@rickroll not sure how they gathered the data but interesting to see Netherlands appear on it a lot more than other countries on different extremes. Less formal, most sleep, and most expensive fuel.
I dont know if this counts within the less formal part but Dutch people are blunt to the point where it can sometimes seem they are pretty rude. In contrast, due to the formality of the Japanese, in my interactions with them I've almost felt like I am the rude one even though I am behaving normally.