This figure shows the notification rate of unspecified hepatitis B in Australia between 2001 and 2011, by age group. Notification rates have generally been highest among those aged 20 to 29 years or those aged 30 to 39 years, generally followed by those aged over 40 years, then those aged 15 to 19 years, then those aged 5 to 14 years, and notification rates have been lowest among those aged 0 to 4 years. Between 2010 and 2011, notification rates have declined in all age groups.