Database: financial
Question: How much, in total, did client number 617 pay for all of the transactions in 1998?
SQL: SELECT SUM(T3.amount) FROM client AS T1 INNER JOIN disp AS T4 ON T1.client_id = T4.client_id INNER JOIN account AS T2 ON T4.account_id = T2.account_id INNER JOIN trans AS T3 ON T2.account_id = T3.account_id WHERE STRFTIME('%Y', T3.date)= '1998' AND T1.client_id = 617