Ok I'll follow the lead:
French airlines (Union des Transporteurs Aeriens)
Jan 0%
Feb -16%
Mar No data (strike)
Apr No data (strike)
May No data (lost paperwork)
Jun -15% to 236% (temp hired due strike)
Jul No data (temp on sick leave)
Aug No data (summer leave)
Sep No data (strike)
Oct No data (UTA restaffed due political shuffle)
Nov 157% (possibly unprecise figure due inexperienced staff)
Dec No data (just... no data)
Nigerian airlines (African Airline Association)
Jan 1%
Feb 8% (note: only 32% of flights actually landed)
Mar No data (staff killed during political uprising)
Apr No data (computer stolen)
May No data (staff lost due terror attack)
Jun No data (power outage)
Jul No data (staff held for ransom)
Aug No data (staff lost due cholera outbreak)
Sep 0% (1 flight took off on time, but shot down)
Oct No data (office furniture stolen)
Nov No flights (military coup)
Dec No data (staff lost due famine)
I guess KA isn't doing that bad then...