Thanks Amparo. Yes we'll add inequality on our to-do-list. Using the Mean Log Deviation (MLD) measure, as outlined in Shaohua and Martin’s recent working paper “more relatively-poor people in a less absolutely-poor world”, is a good approach for global and regional aggregation/decomposition of inequality. And note that PovcalNet allows you to quickly get one measure of vulnerability by varying the poverty line by x%. A $1.25 per day is equivalent to $38 per month ($1.25*365/12) and 20% increase would mean setting the poverty line equal to 45.6. Enter this poverty line in PovcalNet here and let us know what you find.