Faulkner et al. (2007)

Hobin et al. (2010)

Year

1999

2001

2003

2005

1999-2005

2005-2006

%

%

%

%

%

%

Males

72.3

69.8

71.8

65.2

69.2

67.0

Females

68.2

55.7

68.7

55.7

62.4

57.5

Grade 9

81.5

71.5

78.8

70.6

75.4

73.4

Grade 10

71.7

64.0

67.8

57.8

64.3

63.2

Grade 11

65.1

56.1

67.5

60.2

63.1

58.7

Grade 12

58.1

53.6

66.4

54.5

59.2

51.3

Total

70.3

63.1

70.2

60.3

62.4