What state has a Net contribution per capita of $-171?
CREATE TABLE "table_of_federal_taxation_and_spending_b" (
  "state" text,
  "revenue_millions" text,
  "population" real,
  "revenue_per_capita" text,
  "spending_millions" text,
  "spending_per_capita" text,
  "net_contribution_per_capita" text
);
SELECT "state" FROM "table_of_federal_taxation_and_spending_b" WHERE "net_contribution_per_capita"='$-171';