| 1 | united states of america | | | | | | | 67 | 2.76% |
| 2 | britain and northern ireland | | | | | | | 44 | 1.81% |
| 3 | kingdom of great britain | | | | | | | 42 | 1.73% |
| 4 | united kingdom of great | | | | | | | 41 | 1.69% |
| 5 | great britain and northern | | | | | | | 41 | 1.69% |
| 6 | of great britain and | | | | | | | 40 | 1.65% |
| 7 | international royal caribbean international | | | | | | | 13 | 0.53% |
| 8 | phoenix reisen phoenix reisen | | | | | | | 12 | 0.49% |
| 9 | uniworld boutique river cruise | | | | | | | 12 | 0.49% |
| 10 | caribbean international royal caribbean | | | | | | | 12 | 0.49% |
| 11 | royal caribbean international royal | | | | | | | 12 | 0.49% |
| 12 | boutique river cruise uniworld | | | | | | | 11 | 0.45% |
| 13 | reisen phoenix reisen phoenix | | | | | | | 11 | 0.45% |
| 14 | river cruise uniworld boutique | | | | | | | 11 | 0.45% |
| 15 | cruise uniworld boutique river | | | | | | | 10 | 0.41% |
| 16 | carnival cruise lines carnival | | | | | | | 9 | 0.37% |
| 17 | lines carnival cruise lines | | | | | | | 9 | 0.37% |
| 18 | cruise lines carnival cruise | | | | | | | 9 | 0.37% |
| 19 | cruises nicko cruises nicko | | | | | | | 9 | 0.37% |
| 20 | msc cruises msc cruises | | | | | | | 8 | 0.33% |
| 21 | nicko cruises nicko cruises | | | | | | | 8 | 0.33% |
| 22 | princess cruises princess cruises | | | | | | | 8 | 0.33% |
| 23 | line norwegian cruise line | | | | | | | 7 | 0.29% |
| 24 | cruises msc cruises msc | | | | | | | 7 | 0.29% |
| 25 | luxury cruisestours scenic luxury | | | | | | | 6 | 0.25% |
| 26 | scenic luxury cruisestours scenic | | | | | | | 6 | 0.25% |
| 27 | norwegian cruise line norwegian | | | | | | | 6 | 0.25% |
| 28 | cruise line norwegian cruise | | | | | | | 6 | 0.25% |
| 29 | cruisestours scenic luxury cruises | | | | | | | 6 | 0.25% |
| 30 | states of america greece | | | | | | | 6 | 0.25% |
| 31 | saint vincent and the | | | | | | | 6 | 0.25% |
| 32 | tours scenic luxury cruisestours | | | | | | | 5 | 0.21% |
| 33 | celebrity cruises celebrity cruises | | | | | | | 5 | 0.21% |
| 34 | rica united states of | | | | | | | 5 | 0.21% |
| 35 | cruisestours scenic luxury cruisestours | | | | | | | 5 | 0.21% |
| 36 | emerald cruises emerald cruises | | | | | | | 5 | 0.21% |
| 37 | and northern ireland united | | | | | | | 5 | 0.21% |
| 38 | ireland united kingdom of | | | | | | | 5 | 0.21% |
| 39 | states of america norway | | | | | | | 5 | 0.21% |
| 40 | france united states of | | | | | | | 5 | 0.21% |