Merci beaucoup - I knew the site and have a problem in that I try to find actual monthly statistics rather than yearly.
Some airports do publish stats but I need Montpellier if possible and can't find any reliable source.
On some forums some stats are posted but not "scientifically" e.a. detailed by airport,month and split into destination.
The best ever stats I found are on the site of the "Statistisches Bundesamt"
Where you can "buy"in their on-line shop ( free of charge) the monthly trafic statistics of all german airports split by destinations ,movements etc.
it is every month a 30 page spreadsheet with incredible accuracy.
Please respect animals - don't eat them...