Regarding the highest tea-input per head, the most recent data I have found (source: http://www.tea.org.au/world/sub2.html) come from 1998: Ireland comes first, then the UK, then Kuwait, Turkey, Qatar, Iran, Sri Lanka, Syria.

Australia ranks 18th. Nothing strange about Australians considering tea-drinking a particularly English thing. And since there is no breakdown of the data to parts of countries, it still could be possible that the English consume more tea than the Irish though the UK trails behind Eire in that respect.

If my personal intake would be the rule in Germany, we would cpmpete for the first or at least second rank.

Wolfgang