I've lost count. But then I was a 'temp' secretary through most of my twenties so often spent a few weeks here, a few weeks there.
Worked in more offices than I can remember, office junior at a firm of actuaries, exams clerk in a college, worked in a sandwich shop until I cut my finger and they sacked me, worked in bars as bar staff, worked in restaurants as a waitress, worked at a conference centre as a receptionist but also got roped in to conference portering, KPing in the kitchen, silver service waiting, bar staff, chambermaid, receptionist at an old people's home, arts administrator, law centre volunteer, administrator for recruitment agency, typist for barrister, cleaner, lettings agent, secretary at law firm specialising in medical negligence, bilingual secretary at a chamber of commerce in France, PA at a commercial law firm, court reporter/legal editor, copy editor for television news, copy editor for radio news, journalist intern, stagiaire, journalist.
Those are the ones I can remember at the moment.