Transport

Articles in SafetyLit
Y-Axis = Volume :: X-Axis = Issue
?=unknown status :: X=no issue published :: nn=articles from issue :: A=relevant article(s) IDed to add
S=searched, nothing relevant :: O=issue published but not yet searched :: C=combination issue

	0	1	2	3	4	5	6

0 (2016)	1	?	?	?	?	?	?
19 (2004)	?	3	1	1	2	?	?
20 (2005)	?	?	1	2	4	2	4
21 (2006)	?	4	?	1	4	?	?
22 (2007)	?	2	?	?	4	?	?
23 (2008)	?	3	1	5	4	?	?
24 (2007)	?	?	?	1	?	?	?
24 (2009)	?	5	3	3	4	?	?
25 (2010)	?	1	3	5	2	?	?
26 (2011)	?	3	4	1	3	?	?
27 (2012)	?	3	?	2	2	?	?
28 (2013)	?	5	1	2	3	?	?
29 (2014)	?	5	4	1	2	?	?
30 (2015)	?	4	2	4	3	?	?
31 (2016)	?	2	?	3	3	?	?
32 (2017)	?	4	5	4	5	?	?
33 (2018)	?	8	18	6	1	1	?
34 (2019)	?	6	2	4	3	?	2
35 (2020)	?	3	5	3	1	S	4
36 (2021)	?	3	6	1	1	2	1
37 (2022)	?	1	1	1	1	2	2
38 (2023)	?	1	1	2	3	?	?