Sex Age group Type of indicator Total Both sexes Total Average 18.6 Both sexes Total Standard deviation 3.3 Both sexes From 18 to 29 years of age Average 17.8 Both sexes From 18 to 29 years of age Standard deviation 2.6 Both sexes From 30 to 39 years of age Average 18.8 Both sexes From 30 to 39 years of age Standard deviation 3.4 Both sexes From 40 to 49 years of age Average 19.3 Both sexes From 40 to 49 years of age Standard deviation 3.7 Males Total Average 18.1 Males Total Standard deviation 3.3 Males From 18 to 29 years of age Average 17.5 Males From 18 to 29 years of age Standard deviation 2.6 Males From 30 to 39 years of age Average 18.2 Males From 30 to 39 years of age Standard deviation 3.3 Males From 40 to 49 years of age Average 18.8 Males From 40 to 49 years of age Standard deviation 3.9 Females Total Average 19.1 Females Total Standard deviation 3.2 Females From 18 to 29 years of age Average 18.2 Females From 18 to 29 years of age Standard deviation 2.5 Females From 30 to 39 years of age Average 19.4 Females From 30 to 39 years of age Standard deviation 3.4 Females From 40 to 49 years of age Average 19.8 Females From 40 to 49 years of age Standard deviation 3.3