I think we should also filter out table totals.  For example, Row A14 for the total number of males, females, and both in the area.  It's exactly a lot of the other tables.

All of the totals should be derivable from the underlying data (e.g. sum over all rows in a table)

An alternative would be to keep these as datapoints in a separate special table, like "Aggregates" or something, but we can generate this afterwards too.