Here are some excerpts from GenBank release note (full text).
Genetic Sequence Data Bank February 15 2001 NCBI-GenBank Flat File Release 122.0 Distribution Release Notes 10896781 loci, 11720120326 bases, from 10896781 reported sequences
The following table provides a per-division breakdown of the number of sequence entries and the total number of bases of DNA/RNA in each sequence data file:
Division Entries Bases BCT1 31886 98623844 BCT2 41860 101446681 BCT3 25957 61169957 EST1 68607 26482518 EST10 77133 30038669 EST10 70842 25128829 EST10 74240 27961000 EST10 74734 26493808 EST10 79570 27026773 EST10 73642 26845176 EST10 69401 29690062 EST10 36249 12346043 EST11 75426 28868815 EST12 77913 30897566 EST13 77104 29195943 EST14 78626 31803510 EST15 74051 31267931 EST16 75737 33213574 EST17 83332 34239547 EST18 80309 32166313 EST19 78696 32203018 EST2 74337 28515847 EST20 74321 30126288 EST21 74033 34298467 EST22 76006 30493774 EST23 77276 32320866 EST24 76099 34063783 EST25 72208 30640952 EST26 76125 31615440 EST27 76807 33325278 EST28 79412 40096434 EST29 97761 51936603 EST3 73497 29811581 EST30 93799 49479012 EST31 68783 18006782 EST32 69097 17963256 EST33 69938 20501410 EST34 43467 10722994 EST35 43405 10962561 EST36 43094 10644069 EST37 62359 23223103 EST38 102485 45052374 EST39 98699 47735808 EST4 74672 28423671 EST40 85197 43231109 EST41 76508 33323473 EST42 68288 29833077 EST43 72167 31398363 EST44 71426 29976696 EST45 84489 34136120 EST46 75421 29817185 EST47 66436 28471661 EST48 71089 31375544 EST49 79134 38011269 EST5 48010 15237519 EST50 74962 34527122 EST51 74014 27006105 EST52 80279 31437138 EST53 75126 33311974 EST54 40134 10242300 EST55 40063 10382818 EST56 40192 11729214 EST57 40515 11151979 EST58 40534 10884061 EST59 40401 11628349 EST6 54630 17299524 EST60 40397 11514833 EST61 40276 11030639 EST62 40216 11024331 EST63 41021 11359272 EST64 41230 10993244 EST65 41149 11446135 EST66 40957 11456356 EST67 43318 11542276 EST68 59115 20285935 EST69 75772 31279186 EST7 75034 29534853 EST70 77285 29223673 EST71 78565 41636990 EST72 77129 42843192 EST73 78243 44654647 EST74 77909 36467168 EST75 77330 44752809 EST76 72702 37740137 EST77 76245 34615510 EST78 73309 44708153 EST79 74572 35805676 EST8 76108 30678979 EST80 73334 41686298 EST81 69694 37810199 EST82 75066 38022532 EST83 73026 49776932 EST84 73228 46297124 EST85 77043 48116062 EST86 72301 32732653 EST87 71568 30652546 EST88 67030 37696704 EST89 70774 39327627 EST9 78014 30022118 EST90 74359 50197370 EST91 75191 29570944 EST92 76173 35190326 EST93 73948 30130772 EST94 74527 35737563 EST95 72203 37026573 EST96 74251 43291885 EST97 75675 46666188 EST98 117358 42472969 EST99 91665 29876262 GSS1 83933 36007975 GSS10 66832 36553933 GSS11 71049 39186660 GSS12 62672 33045144 GSS13 68022 35303878 GSS14 68690 34696217 GSS15 66393 29731089 GSS16 64883 32463507 GSS17 72076 43225351 GSS18 65985 30850657 GSS19 57137 26564145 GSS2 83600 36364367 GSS20 52438 27237182 GSS21 53119 25469092 GSS22 54134 22857153 GSS23 61610 37640258 GSS24 53579 24231611 GSS25 55053 34767321 GSS26 69553 35135997 GSS27 84825 40417127 GSS28 12592 5432235 GSS29 86040 65268008 GSS3 83606 38905535 GSS30 72839 61079766 GSS31 72381 61985112 GSS32 91192 63679245 GSS33 44412 19482539 GSS34 978 325965 GSS4 75155 38614719 GSS5 72738 38844539 GSS6 70088 35069908 GSS7 72782 36511607 GSS8 71858 36838246 GSS9 69043 34188108 HTG1 1305 190234380 HTG10 1213 189056974 HTG11 1212 189897776 HTG12 8167 177583398 HTG13 20608 158451601 HTG14 12447 171130909 HTG15 3630 184870825 HTG16 2063 189583809 HTG17 5413 183828826 HTG18 6970 178902254 HTG19 3616 184582166 HTG2 1278 189898307 HTG20 1166 192460586 HTG21 1165 192128056 HTG22 1162 192335446 HTG23 1223 189726682 HTG24 1176 191241856 HTG25 145 31003052 HTG3 1283 189737422 HTG4 2047 189437439 HTG5 2304 187647070 HTG6 2162 190567320 HTG7 2147 190601976 HTG8 1254 189369218 HTG9 1302 188236860 INV1 6539 163672162 INV2 43419 113005897 INV3 31598 86801539 MAM 29141 25546348 PAT1 193063 77648893 PAT2 91737 32888567 PHG 1683 4749825 PLN1 36327 123082832 PLN2 40010 115150572 PLN3 53948 96522673 PLN4 12096 27294568 PRI1 7880 165504412 PRI2 1374 175869548 PRI3 1324 182694142 PRI4 30526 139925676 PRI5 8237 162168116 PRI6 5142 177110108 PRI7 20515 146699016 PRI8 31272 132071702 PRI9 47328 75074919 ROD1 54548 104561173 ROD2 7797 9322397 STS1 70293 55611806 STS2 83040 36810493 STS3 13172 4329864 SYN 4335 10748946 UNA 899 500996 VRL1 75325 64018824 VRL2 38565 35144926 VRT 51583 46722811
The following table provides the number of entries and bases of DNA/RNA for the twenty most sequenced organisms in Release 122.0 (chloroplast and mitochon- drial sequences not included):
Entries Bases Species 4323294 7028540140 Homo sapiens 2595599 1385749133 Mus musculus 166778 488340565 Drosophila melanogaster 182124 247830592 Arabidopsis thaliana 114669 203787073 Caenorhabditis elegans 189000 165542107 Tetraodon nigroviridis 159412 136005048 Oryza sativa 219183 107771966 Rattus norvegicus 166688 75404535 Bos taurus 155647 68679866 Glycine max 109941 56390403 Lycopersicon esculentum 70448 51527034 Hordeum vulgare 104773 51202716 Medicago truncatula 91352 50512383 Trypanosoma brucei 56416 49410018 Giardia intestinalis 77536 47598841 Strongylocentrotus purpuratus 49939 44524589 Entamoeba histolytica 86706 42479448 Danio rerio 79696 37899117 Zea mays 71318 37381894 Xenopus laevis
The following table lists the number of bases and the number of sequence records in each release of GenBank, beginning with Release 3 in 1982. Over the period 1982 to the present, the number of bases in GenBank has doubled approximately every 14 months.
Release Date Base Pairs Entries 3 Dec 1982 680338 606 14 Nov 1983 2274029 2427 20 May 1984 3002088 3665 24 Sep 1984 3323270 4135 25 Oct 1984 3368765 4175 26 Nov 1984 3689752 4393 32 May 1985 4211931 4954 36 Sep 1985 5204420 5700 40 Feb 1986 5925429 6642 42 May 1986 6765476 7416 44 Aug 1986 8442357 8823 46 Nov 1986 9615371 9978 48 Feb 1987 10961380 10913 50 May 1987 13048473 12534 52 Aug 1987 14855145 14020 53 Sep 1987 15514776 14584 54 Dec 1987 16752872 15465 55 Mar 1988 19156002 17047 56 Jun 1988 20795279 18226 57 Sep 1988 22019698 19044 57.1 Oct 1988 23800000 20579 58 Dec 1988 24690876 21248 59 Mar 1989 26382491 22479 60 Jun 1989 31808784 26317 61 Sep 1989 34762585 28791 62 Dec 1989 37183950 31229 63 Mar 1990 40127752 33377 64 Jun 1990 42495893 35100 65 Sep 1990 49179285 39533 66 Dec 1990 51306092 41057 67 Mar 1991 55169276 43903 68 Jun 1991 65868799 51418 69 Sep 1991 71947426 55627 70 Dec 1991 77337678 58952 71 Mar 1992 83894652 65100 72 Jun 1992 92160761 71280 73 Sep 1992 101008486 78608 74 Dec 1992 120242234 97084 75 Feb 1993 126212259 106684 76 Apr 1993 129968355 111911 77 Jun 1993 138904393 120134 78 Aug 1993 147215633 131328 79 Oct 1993 157152442 143492 80 Dec 1993 163802597 150744 81 Feb 1994 173261500 162946 82 Apr 1994 180589455 169896 83 Jun 1994 191393939 182753 84 Aug 1994 201815802 196703 85 Oct 1994 217102462 215273 86 Dec 1994 230485928 237775 87 Feb 1995 248499214 269478 88 Apr 1995 286094556 352414 89 Jun 1995 318624568 425211 90 Aug 1995 353713490 492483 91 Oct 1995 384939485 555694 92 Dec 1995 425860958 620765 93 Feb 1996 463758833 685693 94 Apr 1996 499127741 744295 95 Jun 1996 551750920 835487 96 Aug 1996 602072354 920588 97 Oct 1996 651972984 1021211 98 Dec 1996 730552938 1114581 99 Feb 1997 786898138 1192505 100 Apr 1997 842864309 1274747 101 Jun 1997 966993087 1491069 102 Aug 1997 1053474516 1610848 103 Oct 1997 1160300687 1765847 104 Dec 1997 1258290513 1891953 105 Feb 1998 1372368913 2042325 106 Apr 1998 1502542306 2209232 107 Jun 1998 1622041465 2355928 108 Aug 1998 1797137713 2532359 109 Oct 1998 2008761784 2837897 110 Dec 1998 2162067871 3043729 111 Apr 1999 2569578208 3525418 112 Jun 1999 2974791993 4028171 113 Aug 1999 3400237391 4610118 114 Oct 1999 3841163011 4864570 115 Dec 1999 4653932745 5354511 116 Feb 2000 5805414935 5691170 117 Apr 2000 7376080723 6215002 118 Jun 2000 8604221980 7077491 119 Aug 2000 9545724824 8214339 120 Oct 2000 10335692655 9102634 121 Dec 2000 11101066288 10106023 122 Feb 2001 11720120326 10896781