2023

202304 Issue 1 Histograph

202308 Issue 2 Histograph

202312 Issue 3 Histograph 

2022

202304 Issue 1 Histograph

2022

202212 Issue 3 Histograph

202209 Issue 2 Histograph

2021

202112 Issue 3 Histograph

202108 Issue 2 Histograph

202104 Issue 1 Histograph

2020

202012 Issue 3 Histograph

202008 Issue 2 Histograph

202004 Issue 1 Histograph

202003 Histograph Issue 1

2019

201911 Issue 3 Histograph

201911 Histograph Issue 3

201908 Issue 2 Histograph

201904 issue 1 Histograph

201903 Histograph Issue 1

2018

201808 Histograph Issue 2

2017

201712 Histograph Issue 3

201709 Histograph Issue 2

2016

201603 Histograph Issue 1

2015

201510 Issue 3 Histograph

201507 Issue 2 Histograph

201507 Histograph Issue 1

2014

201407 Histograph Issue 1

2013

201307 Histograph Issue 2

201303 Histograph Issue 1

2012

201211 Histograph Issue 3

201207 Histograph Issue 2

201204 Histograph Issue 1

2011

201108 Histograph Issue 2

201104 Histograph Issue 1

2010

201011 Histograph Issue 3

201007 Histograph Issue 2

201002 Histograph Issue 1

2009

200908 Histograph Issue 2

200903 Histograph Issue 1

2008

200811 Histograph Issue 3

200806 Histograph Issue 2

200801 Histograph Issue 1

2007

200707 Histograph Issue 2

200703 Histograph Issue 1

2006

200612 Histograph Issue 4

200610 Histograph Issue 3

200605 Histograph Issue 2

200602 Histograph Issue 1

2005

200511 Histograph Issue 3

200507 Histograph Issue 2

200504 Histograph Issue 1

2004

200412 Histograph Issue 2

200408 Histograph Issue 1

2003

200312 Histograph Issue 3

200309 Histograph Issue 2

200307 Histograph Issue 1