Be careful with the "Tax" metric. I've read that North Korea has no taxes and could not believe it, but found to be true. But if you compare their spending related to their GDP, its pretty high. I dont know whats going on there, but maybe they sell services without taxes, but the profit goes to the government, or maybe they give another anem to that.

A government can also tax you without "taxes", just by printin money and eating your purchase power.

I suggest to analyse government spending as % of GDP