How many orders were returned in the year 2020?
returned refers to status_value = 'Returned'; in the year 2020 refers to status_date LIKE '%2020%'
SELECT COUNT(*) FROM order_status AS T1 INNER JOIN order_history AS T2 ON T1.status_id = T2.status_id WHERE T1.status_value = 'Returned' AND STRFTIME('%Y', T2.status_date) = '2020'