Release

Total

Series 1

Aug 2001

20

Series 2

Dec 2001

20

Series 3

April 2002

21

Series 4

Aug 2002

21

Series 5

Dec 2002

31

Series 6

June 2003

21

Series 7

Dec 2003

24

Series 8

June 2004

27

Series 9

Dec 2004

24

Series 10

June 2005

26

Series 11

Dec 2005

24

Series 12

June 2006

25

Series 13

Dec 2006

23

Series 14

June 2007

23

Series 15

Dec 2007

27

Series 16

June 2008

26

Series 17

Dec 2008

25

Series 18

June 2009

26

Series 19

Dec 2009

25

Series 20

June 2010

27

Series 21

Dec 2010

27

Series 22

June 2011

25

Series 23

Dec 2011

28

Series 24

27

Series 25

31

Series 26

26

Series 27

26

Series 28

26

26

TOTAL