Table 4. arXiv articles with link rot, lacking representative Mementos, infected by reference rot.

	1997	1998	1999	2000	2001	2002	2003	2004
arXiv articles	19,536	23,841	27,188	29,815	31,936	34,613	37,405	41,040
with URIs	1,186	2,043	2,810	3,760	4,502	5,627	6,858	7,836
subject to
Link rot	514	891	1,164	1,494	1,642	1,950	2,322	2,281
Not archived	1,076	1,856	2,530	3,133	3,446	4,270	4,718	4,946
Reference rot	1,077	1,860	2,534	3,138	3,464	4,293	4,740	4,981