Year | Asia (%) | America (%) | (%) Africa | Europe (%) | Other (%) |
2013 | 59.78 | 6.78 | 28.18 | 3.63 | 1.63 |
2014 | 67.22 | 8.78 | 19.27 | 2.95 | 1.87 |
2015 | 72.91 | 11.23 | 11.7 | 3.12 | 1.04 |