According to the same 2006 Playboy/Trojan Study there is a significant variation between nationalities. (See Chart Below)
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- Kenya 8.07 in
- Nigeria: 7.9 in
- South Africa: 7.85 in
- Uganda 7.67 in
- Kenya 7.55 in
- Brazil 7.4 in
- Morocco 7.37 in
- Sudan 7.3 in
- Egypt 7.1 in
- Costa Rica 7 in
- Saudi Arabia 7 in
- Iran 6.95 in
- Sweden 6.9
- Turkey 6.9 in
- Pakistan 6.75 in
- Switzerland 6.72 in
- Germany 6.7 in
- Israel 6.7 in
- Russia 6.67 in
- Mexico 6.65 in
- Italy 6.65 in
- Spain 6.6 in
- Canada: 6.5 in
- Argentina 6.5
- France 6.4 in
- India 6.32 in
- Greece 6.2 in
- United States 6.1 in
- Poland 6.15 in
- Australia: 6 in
- Sri Lanka: 5.7 in
- Japan: 5.5 in
- Malaysia: 5.4 in
- Thailand 5.4 in
- Loas: 5.35 in
- China: 5.2 in
- Vietnam: 5.1 in
- Philippines: 4.9 in
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