Road and transport research

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

	1	2	3	4

1 (1992)	4	1	2	4
2 (1993)	1	1	4	3
3 (1994)	5	1	3	3
4 (1995)	6	1	?	?
7 (1998)	?	1	2	1
8 (1999)	1	?	4	4
9 (2000)	?	?	4	4
10 (2001)	5	2	6	4
11 (2002)	3	2	1	6
12 (2003)	7	3	3	2
13 (2004)	4	4	2	4
14 (2005)	6	4	3	5
15 (2006)	2	1	3	3
16 (2007)	2	1	?	?
19 (2010)	?	2	?	?
22 (2013)	1	?	?	?
23 (2014)	?	1	1	?
24 (2015)	?	1	?	?
25 (2016)	?	1	?	?
26 (2017)	1	1	1	?