I'd like to give you some basic information about traffic at Polish airports in 2008
(data from http://www.pasazer.com)
Totall: 20.775.151 +8,37 %
Poland's population: 38.139.000
name in Polish / code / passengers 2008 / rate / city's population and metropolitan area (m:) in millions
Warszawa WAW 9.460.594 +2,07 % 1,71 m: 3,35
Kraków KRK 2.923.961 -3,89 % 0,76 m: 1,5
Katowice KTW 2.426.942 +22,55 % 0,31 m: 2,1 capital city of industrial Upper Silesia region with population reaching almost 5 millions
Gdańsk GDN 1.954.166 +12,23 % 0,46 m: 1,24
Wrocław WRO 1.486.442 +16,97 % 0,63 m: 0,96
Poznań POZ
Łódź LCJ 339.622 +8,73 % 0,75 m: 1,13
Rzeszów RZE 320.585 +17,16 % 0,17 m: 0,35
Szczecin SZZ 302.468 +32,72 % 0,41 m: 0,67
Bydgoszcz BZG 280.182 +54,07 % 0,36 m: 0,46
Zielona Góra IEG 5.689 -15,58 % 0,12
I hope that you can read some of very specific Polish letters. Otherwise I'll have to eliminate them.