In 2011, there were an estimated 298,000 people with dementia. This number is expected to increase markedly over time, with projections suggesting it will reach around 400,000 by 2020 and 900,000 by 2050. Dementia is a leading cause of death, accounting for 6% of all deaths in 2010. Total direct health and aged care services expenditure on people with dementia was at least $4.9 billion in 2009-10.