The drug company has a famously strong dividend record -- and that looks set to continue.It was great while it lasted, but AbbVie's (ABBV 1.77%) most important cash cow -- rheumatoid arthritis treatment Humira -- has been out of patent exclusivity in the U.S. since last year. That's not the only change the drugmaker experienced in the past 18 months. AbbVie also replaced its leader as CEO Richard Gonzalez stepped down; Gonzalez had been at the helm since 2013.The pharmaceutical giant delivered excellent ret ...