This figure shows the annual notification rates for unspecified hepatitis B from 2003 to 2013 by age group. Overall, notification rates for unspecified hepatitis B remained relatively stable for most age groups, with an increasing trend seen from 2011 to 2013 for the 15-19 year age group (from 16.5 to 21.7 per 100,000) and the 30-39 year age groups (from 578 to 62.6 per 100,000).