The dependency ratio represents the ratio of the economically dependent population (those outside the working-age population) to the economically productive population (those within the working-age population).

In this case, we consider the economically dependent population to be those in the age groups "Above 60" and "0 - 14", and the economically productive population to be those in the age group "15 - 60".

The economically dependent population is the sum of the percentages for the "Above 60" and "0 - 14" age groups: Economically dependent population = 30% (Above 60) + 25% (0 - 14) = 55%

The economically productive population is the percentage for the "15 - 60" age group: Economically productive population = 45%

Now, we can calculate the dependency ratio:

Dependency ratio = Economically dependent population / Economically productive population

Dependency ratio = 55% / 45% = 11/9

So, the estimated dependency ratio of the population distribution shown here is approximately 11:9.