Statistics
Statistics by fiscal year are available at “Annual Report of the National Diet Library” (in Japanese).
Back numbers of “Annual Report of the National Diet Library” are available at “National Diet Library Digital Collections.” Please see “Finance” page for budget information.
The NDL in figures (Key statistics of FY 2015)
Buidings and storage
| Total site area | Total floor space | Total area of reading rooms | Total storage space | Storage capacity | |
|---|---|---|---|---|---|
| Tokyo Main Library | 30,000m2 | 14,8000m2 | 19,000m2 | 78,000m2 | 12,000,000 volumes |
| Kansai-kan of the NDL | 83,000m2 | 59,000m2 | 4,300m2 | 24,000m2 | 6,000,000 volumes |
| ILCL * | 7,700m2 | 13,000m2 | 2,100m2 | 3,100m2 | 1,050,000 volumes |
Collections (As of March, 2016)
| Total acquisitions | Annual acquisition | |
|---|---|---|
| Total | 41,881,649 items | 831,184 items |
| Books | 10,751,931 items | 219,051 items |
| Periodicals and newspapers | 17,034,573 items | 552,919 items |
| Microforms | 9,120,592 items | 13,459 items |
| Recorded materials | 715,341 items | 10,224 items |
| Machine-readable materials (CD-ROM, DVDs, etc.) |
134,532 items | 6,459 items |
| Maps | 563,282 items | 5,383 items |
| Doctoral dissertations | 592,392 items | 2,696 items |
| Manuscripts | 384,944 items | 9,781 items |
Services (FY 2015)
| Services for the public | |
|---|---|
| Reference services | 835,984 cases |
| Reading services | 2,269,028 items |
| Copying services | 1,505,980 cases |
| On-site users | 722,062 people |
| Tokyo Main Library | 553,800 people (1,978 per day on average) |
| Kansai-kan of the NDL | 68,881 people (246 per day on average) |
| ILCL | 99,381 people (346 per day on average) |
| Digital Library services | |
|---|---|
| Number of accesses to our website | 21,346,142 |
| Services for the National Diet | |
|---|---|
| Reference and research on request | 44,822 cases |
| Loan services | 22,750 items |
| Copying services | 6,925 cases |
* excluding loan and copying services for research on request
| Services for the executive and judicial branches | |
|---|---|
| Reference and research on request | 1,065 cases |
| Loan services | 7,022 items |
| Services for Libraries | |
|---|---|
| Reference services | 5,128 cases |
| Loan services | 19,666 items |