Provide a view of adults 18+ for all demographics
We always look at population 18 years of age or older. Many of the tables that have information we need (example Income) start at age 25. Others, like some of the educational attainment tables have different rolled up categories for 18 to 24 than for 25+. It would be helpful to have the same level granularity in both groups and to have a section that subtotals the 18+ population.