Map of Australia: In 2010, Western Australia rates increased slightly (50-99 per 100,000). Northern Territory and Victorian rates increased slightly (100-149 per 100,000). Tasmanian rates increased slightly to 50-99 per 100,000. While rates remained in the highest category (150-1000 per 100,000) in South Australia, they decreased in NSW to 100-149 per 100,000. Queensland rates increased to the highest category (150-1000 per 100,000).