For the past five years: ( a ) what is the total amount of advertising spent by the Canada Deposit Insurance Corporation CDIC on an annual basis; ( b ) what contracts were entered into with advertisers; ( c ) what minister is responsible for the CDIC and was there any correspondence between the minister's office and the CDIC pertaining to the advertising; and ( d ) was Communication Canada involved in the decision to advertise CDIC services, please provide relevant information?