Sure Both for you adapting it to the German Wikipedia and for me adding DM and Euro it In fact adding a new currency is pretty easy although I think Ill change the structure so that individual currencies are stored in individual pages for an easier maintenance  But first tell me do these numbers take into account the change in currency so that values in DM get automatically converted to Euros if I simply go multiplying year after year Or will an input in DM also output in DM Because I think the best thing is for currencies to not be converted requiring the user to do a conversion by hand as it would be quite difficult to keep track of which currency was valid for which year  Also could you please provide me a list for Euroonly inflations If Im going to add the older DM its fair I also add the Euro itself in the same move   And what about Germany before  Is data available