@zenkarma. Spanish surplus was from the sales of properties & the taxes collocted from these sales. in so far as the growth of 4%. You have to also accept that Spanish economy was coming out years of neglect and developing from a very low base.
Further there were a lot of capital projects e.g high speed trains, road net work, etc. Any economy that is dragged out of wilderness show that kind of year on year growth but cannot sustain this forever. Poland in Europe & India, Brazil is a good example.