Figure 4 is a line graph of STI hospitalisations by age group (0-19, 20-34, 35-49, 50-64, 65+) by year (2000-2009). 20-34 year olds had the highest rate of hospital admission compared to the other age groups and approximately five times higher than 0-19 year olds, 50-64 year olds and 65+ year olds.