Write SQL query to solve given problem: How many Account Representatives are there in Illinois with satisfying performance?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT COUNT(*) FROM employee AS T1  INNER JOIN location AS T2  ON T1.locationID = T2.locationID INNER JOIN position AS T3  ON T3.positionID = T1.positionID WHERE T3.positiontitle = 'Account Representative' AND T1.performance = 'Good' AND T2.state = 'IL'