These seem to be quite high, especially the Australian salaries.

The average web developer here earns $93,000 AUD?[1] That means that half of web developers are earning more than that.

That's substantially higher than the national median household income of $63,000 AUD [2]

[1]: As few have pointed out, this is correct if we assume the graphic meant average == median. But my point still stands: A reasonable chunk of people get paid more than that.

[2]: http://www.censusdata.abs.gov.au/census_services/getproduct/...