AP -- Recently retired Merck & Co. CEO Richard Clark saw a 65 percent increase in total compensation last year compared with 2009, when stock price fluctuations reduced stock and option awards given to the drugmaker's top executives. Clark, 65, received a compensation package valued at $17.9 million, according to an Associated Press calculation of figures disclosed in a regulatory filing that the Whitehouse Station, N.J., company made Wednesday after markets closed.