Age and Family Structure
This report looks at the Age distribution and quantifies the structure in to 9 possible categories. These are based on 2 scales, Dependency and Age Proportion Ratio of the Dependency.
Dependency here is the ratio of dependent population, include older dependents over 65 and younger dependents under 15 compared to the 15 to 65 working age population. This measure is often used a way of quantify the amount of strain that the working age population might have in supporting those not working and is sometimes further refined to focus on only those currently working. In this case however we focus only on the age structure. The percentage that the young make up of the dependent population yields the Dependent Age Proportion, with a higher value indicating a younger population.
Age Structure Chart
The lines on the following chart are the break points used for structure classifications. For dependency on the X axis they are 56 and 61. For the age proportion of younger dependents (out of young <15 and old dependents >65) on the Y axis they are at 55% and 45%.
Figure 3: Age Structure Map - STI Markets