High consumption

Cannabis takes toll on Aborigines | The Australian

The figures for use of cannabis in some aboriginal communities are startling high:

...cannabis use in remote communities was now as high as 70 per cent of people, with almost 90 per cent of users claiming to be addicted....

In a recent study of three remote Arnhem Land communities, Professor Clough and a team of researchers found that cannabis use exceeded six "cones" daily in almost 90 per cent of users. This was about twice the consumption of regular users elsewhere in Australia.

It's only twice the consumption of regular users elsewhere?