| Czas | Liczba bibliotek |
|---|---|
| 1995-12-31 | 9505 |
| 1996-12-31 | 9342 |
| 1997-12-31 | 9230 |
| 1998-12-31 | 9167 |
| 1999-12-31 | 9046 |
| 2000-12-31 | 8915 |
| 2001-12-31 | 8849 |
| 2002-12-31 | 8783 |
| 2003-12-31 | 8727 |
| 2004-12-31 | 8653 |
| 2005-12-31 | 8591 |
| 2006-12-31 | 8542 |
| 2007-12-31 | 8489 |
| 2008-12-31 | 8420 |
| 2009-12-31 | 8392 |
| 2010-12-31 | 8342 |
| 2011-12-31 | 8290 |
| 2012-12-31 | 8182 |
| 2013-12-31 | 8112 |
| 2014-12-31 | 8094 |
| 2015-12-31 | 8050 |
| 2016-12-31 | 7984 |
| 2017-12-31 | 7953 |
| 2018-12-31 | 7925 |
| 2019-12-31 | 7881 |
| 2020-12-31 | 7782 |
| 2021-12-31 | 7693 |
| 2022-12-31 | 7638 |
Prawa autorskie należą do H Brothers Inc., 2008–2024
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