A4 sent the following message to the Queensland Government via its contact webpage ... 

Much of the information on your webpage: https://www.qld.gov.au/disability/commu… is out of date.

Over 2% of school-age children in Australia are now diagnosed with autism spectrum disorder.

The DSM-5 was published back in May 2013 — the term "autism spectrum disorder" replaced the terminology/categories described in the DSM-IV.