year

average age (years old)

male (810)

female (379)

total (1189)

2000

2008

2012

2016

18.4 ± 0.5

18.2 ± 0.4

18.3 ± 0.5

18.6 ± 0.6

339

306

81

84

51

90

124

114

390

396

205

198