| 1 | A | B | C | D | E | F | G | H |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 2 | 2017 / 2018 data |  |  |  |  |  |  |  |
| 3 | rank 2018 | airport | total passengers |  |  | aircraft movements |  |  |
| 4 |  |  | 2017 | 2018 | change 2017 / 18 | 2017 | 2018 | change 2017 / 18 |
| 5 | 1 | london-heathrow | 78,012,825 | 80,124,537 | 2.7% | 475,783 | 477,604 | 0.4% |
| 6 | 2 | london-gatwick | 45,556,899 | 46,086,089 | 1.2% | 285,912 | 283,919 | 0.7% |
| 7 | 3 | manchester | 27,826,054 | 28,292,797 | 1.2% | 203,689 | 201,247 | 1.2% |
| 8 | 4 | london-stansted | 25,904,450 | 27,996,116 | 8.1% | 189,919 | 201,614 | 6.2% |
| 9 | 5 | london-luton | 15,990,276 | 16,769,634 | 4.9% | 133,743 | 136,511 | 2.1% |
| 10 | 6 | edinburgh | 13,410,343 | 14,294,305 | 6.6% | 128,675 | 130,016 | 1.0% |
| 11 | 7 | birmingham | 12,990,303 | 12,457,051 | 4.1% | 122,067 | 111,828 | 8.4% |
| 12 | 8 | glasgow | 9,897,959 | 9,656,227 | 2.4% | 102,766 | 97,157 | 5.5% |
| 13 | 9 | bristol | 8,239,250 | 8,699,529 | 5.6% | 76,199 | 72,927 | 4.3% |
| 14 | 10 | belfast-international | 5,836,735 | 6,268,960 | 7.4% | 58,152 | 60,541 | 4.1% |
| 15 | 11 | newcastle | 5,300,274 | 5,334,095 | 0.6% | 57,808 | 53,740 | 7.0% |
| 16 | 12 | liverpool | 4,901,157 | 5,046,995 | 3.0% | 56,643 | 59,320 | 4.7% |
| 17 | 13 | east midlands | 4,878,781 | 4,873,831 | 0.1% | 77,067 | 76,013 | 1.4% |
| 18 | 14 | london-city | 4,530,439 | 4,820,292 | 6.4% | 80,490 | 80,854 | 0.5% |
| 19 | 15 | leeds bradford | 4,076,616 | 4,038,889 | 0.9% | 46,159 | 38,680 | 16.2% |
| 20 | 16 | aberdeen | 3,090,642 | 3,056,018 | 1.1% | 97,007 | 91,279 | 5.9% |
| 21 | 17 | belfast-city | 2,559,846 | 2,511,261 | 1.9% | 36,332 | 35,959 | 1.0% |
| 22 | 18 | southampton | 2,069,950 | 1,991,014 | 3.8% | 44,161 | 39,651 | 10.2% |
| 23 | 19 | jersey | 1,637,763 | 1,664,175 | 1.6% | 46,615 | 42,436 | 9.0% |
| 24 | 20 | cardiff | 1,465,227 | 1,581,131 | 7.9% | 28,934 | 31,085 | 7.4% |
| 25 | 21 | london-southend | 1,092,269 | 1,480,139 | 35.5% | 26,674 | 32,531 | 22.0% |
| 26 | 22 | doncaster sheffield | 1,355,559 | 1,222,347 | 8.5% | 17,435 | 18,930 | 8.6% |
| 27 | 23 | exeter | 908,750 | 931,265 | 2.5% | 40,472 | 39,532 | 2.3% |
| 28 | 24 | inverness | 874,934 | 894,360 | 2.2% | 31,002 | 29,690 | 4.2% |
| 29 | 25 | guernsey | 843,272 | 837,615 | 0.7% | 38,209 | 36,356 | 4.8% |
| 30 | 26 | isle of man | 797,615 | 836,656 | 4.9% | 23,061 | 23,431 | 1.6% |
| 31 | 27 | glasgow-prestwick | 696,309 | 681,715 | 2.1% | 24,897 | 24,904 | 0.0% |
| 32 | 28 | bournemouth | 694,660 | 674,972 | 2.8% | 34,641 | 39,886 | 15.1% |
| 33 | 29 | norwich | 528,153 | 536,578 | 1.6% | 37,307 | 34,287 | 8.1% |
| 34 | 30 | newquay | 461,300 | 456,888 | 1.0% | 37,113 | 41,172 | 10.9% |
| 35 | 31 | sumburgh | 256,418 | 245,868 | 4.1% | 22,347 | 16,628 | 25.6% |
| 36 | 32 | humberside | 190,936 | 192,526 | 0.8% | 18,282 | 18,759 | 2.6% |
| 37 | 33 | city of derry | 193,981 | 185,843 | 4.2% | 5,156 | 6,330 | 22.8% |
| 38 | 34 | kirkwall | 177,248 | 181,562 | 2.4% | 14,754 | 14,771 | 0.1% |
| 39 | 35 | scatsta | 170,847 | 174,934 | 2.4% | 8,224 | 8,513 | 3.5% |
| 40 | 36 | durham tees valley | 130,911 | 142,080 | 8.5% | 19,668 | 16,950 | 13.8% |
| 41 | 37 | stornoway | 134,148 | 135,700 | 1.2% | 10,924 | 10,570 | 3.2% |
| 42 | 38 | st mary's | 91,852 | 92,195 | 0.4% | 11,357 | 12,546 | 10.5% |
| 43 | 39 | land's end | 59,386 | 64,216 | 8.1% | 10,062 | 11,511 | 14.4% |
| 44 | 40 | alderney | 54,760 | 53,343 | 2.6% | 9,707 | 8,981 | 7.5% |
| 45 | total | none | 287,869,097 | 295,583,748 | 2.7% | 2,789,413 | 2,768,659 | 0.7% |

Question: what was the rank of cardiff airport in 2018?
Answer: 20