Line graph demonstrates the population screening coverage of children aged 5-9 years (%) by year (2007-2012) and jurisdiction (NT, SA, WA and QLD). WA has a gradually increasing trend from 33% in 2007 to 73% in 2012. NT has a gradually increasing trend of 25% in 2007 to 67% in 2012. SA illustrated no particular trend over time, however a sharp increase occurred from 4% in 2009 to 79% in 2012. QLD has coverage of 64% in 2012