This table contains 159264 series, with data for years 2000 - 2000 (not all combinations necessarily have data for all years). This table contains data described by the following dimensions (Not all combinations are available): Age group (14 items: Total; 12 years and over;12 to 14 years;15 to 19 years;12 to 19 years ...), Sex (3 items: Both sexes; Males; Females ...), Bicycle helmet use (6 items: Total; bicycle helmet use; Bicycle helmet use; most of the time; Bicycle helmet use; rarely; Bicycle helmet use; always ...), Characteristics (8 items: Number of persons; Low 95% confidence interval; number of persons; High 95% confidence interval; number of persons; Coefficient of variation for number of persons ...).