CREATE TABLE table_19506 ("Rank" FLOAT, "State" TEXT, "Revenue  ( millions ) " TEXT, "Population" FLOAT, "Revenue per capita" TEXT, "Spending  ( millions ) " TEXT, "Spending per capita" TEXT, "Net contribution per capita" TEXT, "Presidential majority 2000/2004" TEXT, "Presidential majority 2008" TEXT, "Presidential majority 2012" TEXT, "Obamacare: Fed/ State/ Partnership" TEXT)

How many numbers were recorded under revenue when revenue per capita was $6,126?
SELECT COUNT("Revenue (millions)") FROM table_19506 WHERE "Revenue per capita" = '$6,126'
SELECT COUNT("Revenue (millions)") FROM "table_19506" WHERE "Revenue per capita" = '$6,126'