| AFRD: Africa region, stratum D (AFR D) |
| AFRE: Africa region, stratum E (AFR E) |
| AMRA: Americas region, stratum A (AMR A) |
| AMRB: Americas region, stratum B (AMR B) |
| AMRD: Americas region, stratum D (AMR D) |
| EMRB: Eastern Mediterranean region, stratum B (EMR B) |
| EMRD: Eastern Mediterranean region, stratum D (EMR D) |
| EURA: Europe region, stratum A (EUR A) |
| EURB: Europe region, stratum B (EUR B) |
| EURC: Europe region, stratum C (EUR C) |
| SEARB: South East Asia region, stratum B (SEAR B) |
| SEARD: South East Asia region, stratum D (SEAR D) |
| WPRA: Western Pacific region, stratum A (WPR A) |
| WPRB: Western Pacific region, stratum B (WPR B) |
| WORLD: World |