Brunei
at birth: 1.06 male(s)/female
under 15 years: 1.04 male(s)/female
15-64 years: 1.13 male(s)/female
65 years and over: 0.9 male(s)/female
total population: 1.09 male(s)/female (2005 est.)
Bulgaria
at birth: 1.06 male(s)/female
under 15 years: 1.05 male(s)/female
15-64 years: 0.97 male(s)/female
65 years and over: 0.71 male(s)/female
total population: 0.93 male(s)/female (2005 est.)
Burkina Faso
at birth: 1.03 male(s)/female
under 15 years: 1.01 male(s)/female
15-64 years: 0.96 male(s)/female
65 years and over: 0.71 male(s)/female
total population: 0.97 male(s)/female (2005 est.)
Burma
at birth: 1.06 male(s)/female
under 15 years: 1.04 male(s)/female
15-64 years: 0.99 male(s)/female
65 years and over: 0.79 male(s)/female
total population: 0.99 male(s)/female (2005 est.)
Burundi
at birth: 1.03 male(s)/female
under 15 years: 1.02 male(s)/female
15-64 years: 0.98 male(s)/female
65 years and over: 0.65 male(s)/female
total population: 0.99 male(s)/female (2005 est.)
Cambodia
at birth: 1.05 male(s)/female
under 15 years: 1.02 male(s)/female
15-64 years: 0.92 male(s)/female
65 years and over: 0.57 male(s)/female
total population: 0.94 male(s)/female (2005 est.)
Cameroon
at birth: 1.03 male(s)/female
under 15 years: 1.02 male(s)/female
15-64 years: 1.01 male(s)/female
65 years and over: 0.82 male(s)/female
total population: 1.01 male(s)/female (2005 est.)
Canada
at birth: 1.05 male(s)/female
under 15 years: 1.05 male(s)/female
15-64 years: 1.01 male(s)/female
65 years and over: 0.74 male(s)/female
total population: 0.98 male(s)/female (2005 est.)
Cape Verde
at birth: 1.03 male(s)/female
under 15 years: 1.02 male(s)/female
15-64 years: 0.94 male(s)/female
65 years and over: 0.6 male(s)/female
total population: 0.94 male(s)/female (2005 est.)
Cayman Islands
at birth: 1.02 male(s)/female
under 15 years: 1 male(s)/female
15-64 years: 0.95 male(s)/female
65 years and over: 0.89 male(s)/female
total population: 0.96 male(s)/female (2005 est.)