2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | |
---|---|---|---|---|---|---|---|
Total (%) | 5629 (100) | 5761 (100) | 6972 (100) | 8589 (100) | 10,501 (100) | 12,912 (100) | 15,547 (100) |
Normal (%) | 2822 (50.1) | 2370 (41.1) | 2567 (36.8) | 3535 (41.2) | 4518 (43.0) | 5335 (41.3) | 6433 (41.4) |
Obstructive abnormalities (%) | 2083 (37.0) | 2554 (44.3) | 3267 (46.9) | 3624 (42.2) | 4336 (41.3) | 5452 (42.2) | 6666 (42.9) |
Mixed abnormalities (%) | 457 (8.1) | 492 (8.5) | 691 (9.9) | 883 (10.3) | 975 (9.3) | 1266 (9.8) | 1489 (9.6) |
Restrictive abnormalities (%) | 267 (4.7) | 345 (6.0) | 447 (6.4) | 547 (6.4) | 672 (6.4) | 859 (6.7) | 959 (6.2) |