Statistics
Statistics by fiscal year are available at "Annual Report of the National Diet Library".
Please see "Finance" page for budget information.
The NDL in figures (Key statistics of FY 2022)
Buildings and storages (Approximate)
Total site area | Total floor space | Total area of reading rooms | Total storage space | Storage capacity | |
---|---|---|---|---|---|
Tokyo Main Library | 30,000m2 | 148,000m2 | 19,000m2 | 78,000m2 | 12,000,000 volumes |
Kansai-kan of the NDL | 83,000m2 | 84,000m2 | 4,300m2 | 39,000m2 | 11,000,000 volumes |
ILCL | 7,700m2 | 13,000m2 | 2,100m2 | 3,100m2 | 1,050,000 volumes |
Collections (domestic and foreign publications)
Total acquisitions | Annual acquisition | ||
---|---|---|---|
Total | 46,855,998 items | Total | 871,292 items |
Books | 12,113,354 items | Books | 186,646 items |
Periodicals | 13,456,981 items | Periodicals | 260,288 items |
Newspapers | 6,904,107 items | Newspapers | 186,299 items |
Microforms | 9,167,880 items | Microforms | 163,479 items |
Video recordings | 281,359 items | Video recordings | 28,614 items |
Audio recordings | 813,300 items | Audio recordings | 11,458 items |
Machine-readable materials (CD-ROMs, etc.) |
182,830 items | Machine-readable materials (CD-ROMs, etc.) |
9,461 items |
Maps | 596,759 items | Maps | 3,783 items |
Musical scores | 31,840 items | Musical scores | 3,143 items |
Doctoral dissertations | 601,664 items | Doctoral dissertations | 1,532 items |
Manuscripts | 438,370 items | Manuscripts | 14,385 items |
Braille and large print | 50,220 items | Braille and large print | 1,838 items |
Services
Services for the public | |
---|---|
Reference services | 500,513 cases |
Reading services | 1,652,421 items |
Photoduplication services | 942,166 cases |
Remote photoduplication services | 277,981 cases |
On-site users | 509,023 people |
Tokyo Main Library | 334,626 people (1,199 per day on average) |
Kansai-kan of the NDL | 67,188 people (241 per day on average) |
ILCL | 107,209 people (377 per day on average) |
Digital Library services | |
---|---|
Visitors to our website | 37,941,442 cases |
Viewers of digitized materials on the NDL Digital Collections | 66,871,857 cases |
Viewers of contents on the Web Archiving Project | 38,797,455 cases |
Digitized materials available on the NDL Digital Collections Number of digitized materials |
5,028,894 items |
Number of materials available via the internet | 1,838,041 items |
Available with Digitized Contents Transmission Service | 1,851,430 items |
Available only at the NDL | 1,339,423 items |
Materials digitized by the NDL (Approximate) | 3,430,000 items |
Number of materials available via the internet | 580,000 items |
Available with Digitized Contents Transmission Service | 1,840,000 items |
Available only at the NDL | 1,010,000 items |
Online publications collected by the NDL (Approximate) | 1,480,000 items |
Number of materials available via the internet | 1,250,000 items |
Available only at the NDL | 220,000 items |
Number of captures (Web Archiving Project) | 238,065 items |
Services for the Diet | |
---|---|
Research on request | 33,465 cases |
Research on national policy issues | 319 cases |
Services for the executive and judicial branches of the government | |
---|---|
Research and reference | 426 cases |
Loan services | 4,028 items |
Services for Libraries | |
---|---|
Reference services | 4,142 cases |
Loan services | 14,024 items |
Libraries participating in the Collaborative Reference Database | 907 libraries |