Well in fact I left the country already after living there for almost 3 years. I had a resident permit which has now expired. I left while it was still valid. I didn't do any procedure for the departure and it just crossed my mind that maybe I was supposed to? Will this cause problems returning to the country. I would just prefer being a tourist in Bolivia rather than a resident as residents pay to enter and exit the country while tourists do not. I didn't see any benefit being a resident in my case.