Year

2009

2010

2011

2012

2013

2014

2015

2016

2017

2018

2019

2020

Average board size

14

15

14

13

13

13

13

13

13

13

13

12

Standard Deviation

4.56

4.51

4.74

4.10

4.83

3.42

3.53

3.79

3.82

3.82

4.48

4.48

Maximum size

23

23

23

22

20

19

18

20

21

21

22

21

Minimum Board Members

6

6

6

6

6

7

7

7

6

6

6

5