United States
0.6% (2003 est.)
Uruguay
0.3% (2001 est.)
Uzbekistan
less than 0.1% (2001 est.)
Vanuatu
NA
Venezuela
0.7% - note - no country specific models provided (2001
est.)
Vietnam
0.4% (2003 est.)
Virgin Islands
NA
Wallis and Futuna
NA%
West Bank
NA
Western Sahara
NA