2. Birth Rate

   The number of live births per thousand of population per year.

2. Dependency Load

   A demographic indicator that measures the ratio of people in dependant age groups, to those in economically productive age groups.

This information is important and useful to countries, currently and in the future, because

It is both important and useful to look at this information now and in the future as it is crucial for several reasons, one of many being, Population Planning: undertstanding these metrics help governemnts plan for future population growth or decline, allocate resources effectively, and prepare for potential challenges/hardships such as aging populations, or youth buldges. Therefore, this reason out of many others perfectly explains why it is important/useful for countries, and generally to look at this information currently and in the future with a critically perceptive eye.

Differences linking these three factors exist between countries for a variety of factors. Such examples being, Socio-Economic Development, Cultural and Religious Beliefs, Healthcare Systems, Enviornmental Conditions, and Government Policies. Overall they exist to house multiple other factors beneath them, basing a foundation for the statistics of countries.