When did the man start working at this company?

W: I can’t believe that you are leaving us after 10 years here, John.(59)
M: It has been a long time, hasn’t it? I can’t believe that I am leaving either. I mean I started working here right after I graduated from college, and I have gotten so close to everyone here. I am really going to miss the staff.
W: You know, it is sad to see you go, but at the same time, I want to wish you the best in the new business you are starting up.(60)I am sure that you are going to be successful.(61)
M: Thanks. I’ve been waiting a long time to do this, and I can’t believe that I am finally doing it.