with runways 2,440-3,659 m: 3 with runways over 3,659 m:

1.208239 0.827651 2.3510% 1913 1.416632 0.705900 YEAR: 1897 2010 42.856541 0.023334 4% Est. 1989 1.000000 1.000000 16.6637% 1916 0.180669 5.534970 20.0069% 1915 0.043538 22.968353 9.1939% 1914 0.061382 16.291516 2.3510% 1913

intro