United States:
3.2% (FY99 est.)

Uruguay:
0.9% (FY98)

Uzbekistan:
2% (FY97)

Vanuatu:
NA%

Venezuela:
0.9% (FY99)

Vietnam:
2.5% (FY98)

West Bank:
NA%

Western Sahara:
NA%

World:
roughly 2% of gross world product (1999 est.)

Yemen:
7.6% (FY99)