Survey Of 5,000 British Fifty Pence Coins

I have just completed a survey of 5,000 50p coins. All were obtained from banks in South-East England:

Standard designs (Britannia and Shield):

1997 1785
1998 271
1999 104
2000 117
2001 394
2002 97
2003 90
2004 192
2005 141
2006 130
2007 68
2008 Britannia 27
2008 Shield 107
2012 241
2013 91
2014 319
2015 Rank-Broadley 130
2015 Jody Clark 280
2017 3

Commemorative coins:
1998 NHS 4
1998 EU 7
2000 Libraries 18
2003 Suffragettes 4
2004 Roger Bannister 14
2005 Dictionary 40
2006 VC Soldier 21
2006 VC Medal 30
2007 Scouts 23
2009 Kew Gardens 0
2010 Guides 21
2011 WWF 5
2011 Olympics 33
2013 Ironside 21
2013 Benjamin Britten 10
2014 Games 13
2015 Battle of Britain 15
2016 Team GB 36
2016 Battle of Hastings 32
2016 Beatrix Potter 7
2016 Peter Rabbit 4
2016 Jemima Puddle-Duck 5
2016 Squirrel Nutkin 4
2016 Mrs Tiggy-Winkle 29
2017 Isaac Newton 1
2017 Benjamin Bunny 2
2017 Tom Kitten 1
2017 Mr Jeremy Fisher 1
2017 Tale of Peter Rabbit 3

Others:

1997 Jersey 1
2006 Jersey 1
2012 Jersey 2
1997 Guernsey 1
2008 Guernsey 1
1997 Isle of Man 1
2015 Isle of Man 1
1997 Hungary 50 Forint 1

Here are a couple of charts:

Standard design 50p's:


Commemorative 50p's:


When I get time, I will do a chart comparing the number of coins of each date / type found to the number one would expect to find, based on mintage figures.

I found no NIFC coins, no Kew Gardens 50p and only 19 different designs of the 29 Olympic ones.

Olympic 50p's found were as follows: Aquatics, Archery (4), Athletics (2), Basketball (2), Boccia (2), Boxing (2), Canoeing (3), Cycling (4), Equestrian, Fencing, Goalball, Pentathlon, Table-Tennis, Taekwondo, Triathlon (2), Volleyball, Weightlifting, Wheelchair Rugby (2), Wrestling.

The Hungarian coin I found is not even seven-sided!