In 2012–13, hospital admitted patient expenditure was estimated at $45.0 billion, and accounted for almost one third (31%) of total health expenditure. Expenditure for Aboriginal and Torres Strait Islander people was estimated at $2.1 billion. Expenditure was highest in older age groups, but grew for all age groups from 2004–05 to 2012–13 (45.5%). Cardiovascular diseases were the largest disease contributor at $5.0 billion (11.1%), followed by injuries at $4.1 billion (9.0%).