| Year | Branches | Membership |
|---|---|---|
| 2023-24 | 1,590 | 83,924 |
| 2022-23 | 1,517 | 73,691 |
| 2021-22 | 1,433 | 66,620 |
| | | |
| 2020-21 | 1,418 | 66,524 |
| 2019-20 | 1,368 | 62,727 |
| 2018-19 | 1,430 | 68,096 |
| 2017-18 | 1,383 | 65,690 |
| 2016-17 | 1,346 | 61,388 |
| | | |
| 2015-16 | 1,251 | 57,310 |
| 2014-15 | 1,245 | 54,752 |
| 2013-14 | 1,166 | 52,969 |
| 2012-13 | 1,157 | 52,799 |
| 2011-12 | 1,147 | 50,128 |
| | | |
| 2010-11 | 1,094 | 47,767 |
| 2009-10 | 1,026 | 42,865 |
| 2008-09 | 965 | 40,310 |
| 2007-08 | 929 | 37,079 |
| 2006-07 | 897 | 35,813 |
| | | |
| 2005-06 | 896 | 35,740 |
| 2004-05 | 863 | 33,553 |
| 2003-04 | 768 | 29,862 |
| 2002-03 | 749 | 27,846 |
| 2001-02 | 648 | 25,743 |
| | | |
| 1993-94 | 39 | 1,560 |
| 1973-84 | 10 | 500 |
| 1963-64 | 1 | 101 |