What is the total sales of furniture products in the east superstore in the year 2016.

furniture products refers to Category = 'Furnitures'; in the year 2016 refers to "Order Date" BETWEEN '2016-01-01' AND '2016-12-31'
SELECT SUM(T1.Sales) FROM east_superstore AS T1 INNER JOIN product AS T2 ON T1.`Product ID` = T2.`Product ID` WHERE STRFTIME('%Y', T1.`Order Date`) = '2016' AND T2.Category = 'Furniture'