Question: What's the sum of the headcounts that have an N/A value of $60k to $70K?
SQL: SELECT SUM("Headcount") FROM "2-1824186-1" WHERE "$60,000 to $70,000" = 'N/A';

Question: What's the mean of the $70-80k ones that have 2.80%?
SQL: SELECT "Mean" FROM "2-1824186-1" WHERE "$70,000 to $80,000" = '2.80%';

Question: Which have more than $80k and a total percent of 2.2%?
SQL: SELECT "More than $80,000" FROM "2-1824186-1" WHERE "Percent of total" = '2.2%';

Question: What's the total percent of the $40-50K ones that have N/A?
SQL: SELECT "Percent of total" FROM "2-1824186-1" WHERE "$40,000 to $50,000" = 'N/A';