I'd like to see who else from Bolivia is here. Maybe I find a work colleague. :D
I think the best way is the StackExchange data explorer.
I just made a quick user search query for you: http://data.stackexchange.com/programmers/s/1051/users-from
Type in "Bolivia" and there you go! There were 4 at the last import on February 10. Imports are done once a month.