Before revision:  Income distribution derived for other countries are following similar trends . The collapse on the master-curve is not perfect however, suggesting that for a more realistic modelling specific socio-economic characteristics have to be taken also into account .
After revision:  Income distribution derived for other countries are following similar trends with different fit parameters. The non-universal feature of the fit parameters suggests that for a more realistic modelling specific socio-economic characteristics have to be taken also into account .