n

Mean

Std. Dev.

Median

10^th

90^th

2000

2012

469.56

89.76

474.34

341.86

581.15

2003

10453

499.41

87.75

502.29

383.97

640.78

2006

16014

481.90

90.47

483.21

364.53

597.36

2009

23588

495.02

84.43

497.05

384.18

604.15

all

52067

490.88

87.57

492.76

376.45

602.81