| Iran |
6.42 |
| Ecuador |
6.35 |
| Bolivia |
6.30 |
| Zambia |
6.27 |
| Thailand |
6.21 |
| Philippines |
6.21 |
| Georgia |
6.19 |
| Greece |
6.18 |
| El Salvador |
6.17 |
| Albania |
6.16 |
| Czech Republic |
6.14 |
| Turkey |
6.13 |
| Hungary |
6.13 |
| Kuwait |
6.12 |
| Guatemala |
6.12 |
| Poland |
6.11 |
| Colombia |
6.11 |
| Zimbabwe |
6.08 |
| Brazil |
6.07 |
| Nigeria |
6.03 |
| Russia |
6.01 |
| India |
5.98 |
| Indonesia |
5.95 |
| Malaysia |
5.93 |
| Mexico |
5.92 |
| Taiwan |
5.92 |
| Japan |
5.89 |
| China |
5.88 |
| Costa Rica |
5.86 |
| Kazakhstan |
5.85 |
| Slovenia |
5.85 |
| Namibia |
5.82 |
| Egypt |
5.81 |
| Austria |
5.80 |
| Venezuela |
5.78 |
| South Africa (White
Sample) |
5.74 |
| Germany (EAST) |
5.74 |
| Israel |
5.73 |
| Singapore |
5.71 |
| Italy |
5.69 |
| Hong Kong |
5.67 |
| Argentina |
5.67 |
| Spain |
5.66 |
| USA |
5.63 |
| South Korea |
5.62 |
| Ireland |
5.60 |
| South Africa (Black
Sample) |
5.59 |
| Portugal |
5.55 |
| Germany (WEST) |
5.51 |
| Switzerland |
5.51 |
| Canada (English-speaking) |
5.45 |
| Sweden |
5.44 |
| Netherlands |
5.43 |
| Australia |
5.41 |
| England |
5.35 |
| Finland |
5.32 |
| French Switzerland |
5.17 |
| Morocco |
5.16 |
| Denmark |
5.14 |
| New Zealand |
4.79 |
| Qatar |
4.74 |
| France |
4.53 |
|
|
