| 1997/98 | 1998/99 | 1999/00 | 2000/01 | 2001/02 | 2002/03 | 2003/04 | 2004/05 | 2005/06 | 2006/07 | |
|---|---|---|---|---|---|---|---|---|---|---|
| Successful requests | 441,480 | 976,587 | 1,436,279 | 2,725,773 | 6,759,779 | 9,455,258 | 13,627,721 | 23,327,315 | 27,199,853 | 24,934,678 |
| Requests for PDF files (mostly full ETDs) |
221,679 | 481,038 | 578,152 | 2,173,420 | 4,497,199 | 7,320,818 | 10,697,468 | 17,461,678 | 21,113,555 | 18,580,199 |
| Requests for HTML files (mostly tables of contents and abstracts) |
165,710 | 215,539 | 260,699 | 400,149 | 471,917 | 367,767 | 410,988 | 517,684 | 555,518 | 547,237 |
| Requests for Multimedia | 1,714 | 4,468 | 12,633 | 44,237 | 169,186 | 121,251 | 54,584 | 87,911 | 88,996 | 123,648 |
| Distinct files requested | 6,419 | 21,451 | 16,409 | * | 50,982 | 31,884 | 43,280 | 53,606 | 112,260 | 135,874 |
| Distinct hosts served | 29,816 | 57,901 | 87,804 | * | 425,475 | 680,771 | 985,146 | 1,594,913 | 18,92,653 | 1,530,570 |
| Average data transferred daily | 156,089 Kb | 219,132 Kb | 382 Mb | 945 Mb | 2.15 Gb | 3.49 Gb | 5.641 Gb | 27.85 Gb | 38.18 Gb | 38.46 Gb |
| Data transferred | 55,637 Mb | 78,107 Mb | 137 Gb | 332 Gb | 780 Gb | 1.2 Tb | 2.06 Tb | 9.93 Tb | 13.97 Tb | 13.71 Tb |
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