In 1996, how many orders were from customers in the UK?
in 1996 refers to YEAR (OrderDate) = 1996; 'UK' is the Country;
SELECT COUNT(T1.CustomerID) FROM Customers AS T1 INNER JOIN Orders AS T2 ON T1.CustomerID = T2.CustomerID WHERE STRFTIME('%Y', T2.OrderDate) = '1996' AND T1.Country = 'UK'