It's not a hierarchy, and they don't add up to 100%, so there is double-counting. I just did the math on one of the rows from the report using the + labels and

It's not a hierarchy, and they don't add up to 100%, so there is double-counting. I just did the math on one of the rows from the report using the + labels and that row added up to 104.6%, so we can deduce that 4.6% of people fit into two categories (or maybe slightly less than that including people that fit into 3 or more categories).