Table 2 The number of participants completing each survey
| Survey | Winter (Response rate %) | Summer (Response rate %) | Both (Response rate %) | |
|---|---|---|---|---|
| 2009 | UK | 260 | 233 | 105 (15.98%) |
| 2012 | Nordic countries | 68 (63.55%) | 44 (41.12%) | 40 (18.69%) |
| Southeast Asia | 89 (63.57%) | 57 (51.18%) | 51 (21.25%) | |
| Japan | 153 (75.74%) | 117 (57.92%) | 96 (20.55%) |