Table 2. Annual growth in the number organisms, proteins, and transcripts represented in the comprehensive RefSeq release, per FTP release directory.

Release Directory	Organisms	% Change	Transcripts	% Change	Proteins	% Change
Archaea	952	12	1109	318	1037407	-5
Bacteria	39660	40	19650	488	40194748	14
Fungi	3367	18	1438749	17	1440956	17
Invertebrate	1786	29	1435978	76	1367317	74
Mitochondrion	5732	24	112	-15	83208	24
Plant	847	59	2181963	86	2067971	75
Plasmid	2139	31	12	9	126725	-62
Plastid	843	54	120	0	72579	50
Protozoa	273	27	849678	46	865048	45
Vertebrate_mammalian	776	14	3778288	44	3266845	39
Vertebrate_other	2755	26	2097939	85	2023378	84
Viral	4850	17	0	0	230360	15
Complete	55267	34	11803354	56	52494032	20

^aCounts are based on statistics reports that are available from the RefSeq FTP site at ftp://ftp.ncbi.nlm.nih.gov/refseq/release/release-statistics/ (e.g. archaea.acc_taxid_growth.txt and related files). The percent annual change is based on comparing data counts for RefSeq release 71 (July 2015) and RefSeq release 66 (July 2014).