Average wrist circumference, by age

Age (years)	Girls	Boys
	mm
8	137.4	145.8
9	141.1	144.1
10	145.1	148.7
11	148.4	151.7
12	151.1	158.7
13	152.8	162.0
14	153.9	166.4
15	151.7	166.9
16	152.0	165.1
17	153.1	168.4
18	153.3	166.5
19	154.7	156.5
Source: Statistics Canada, Census at School, 2008/2009.