CREATE TABLE table_203_154 (id DECIMAL, "type" TEXT, "manufacturer" TEXT, "numbers" TEXT, "year built" DECIMAL, "quantity built" DECIMAL, "power  ( horsepower ) " DECIMAL, "max speed  ( km/h ) " DECIMAL, "note" TEXT)

what are the number of times tokyu is listed as a manufacturer on this chart ?
SELECT COUNT(*) FROM table_203_154 WHERE "manufacturer" = 'tokyu'
SELECT COUNT(*) FROM "table_203_154" WHERE "manufacturer" = 'tokyu'