22-40 都市基本養老保険参加者数
| 年 | 合計 | 従業員 | 離職・退職人員 | ||
| 企業（その他含む） | 企業（その他含む） | ||||
| 1989 | 5710.3 | 4816.9 | 4816.9 | 893.4 | 893.4 |
| 1990 | 6166.0 | 5200.7 | 5200.7 | 965.3 | 965.3 |
| 1991 | 6740.3 | 5653.7 | 5653.7 | 1086.6 | 1086.6 |
| 1992 | 9456.2 | 7774.7 | 7774.7 | 1681.5 | 1681.5 |
| 1993 | 9847.6 | 8008.2 | 8008.2 | 1839.4 | 1839.4 |
| 1994 | 10573.5 | 8494.1 | 8494.1 | 2079.4 | 2079.4 |
| 1995 | 10979.0 | 8737.8 | 8737.8 | 2241.2 | 2241.2 |
| 1996 | 11116.7 | 8758.4 | 8758.4 | 2358.3 | 2358.3 |
| 1997 | 11203.9 | 8670.9 | 8670.9 | 2533.0 | 2533.0 |
| 1998 | 11203.1 | 8475.8 | 8475.8 | 2727.3 | 2727.3 |
| 1999 | 12485.4 | 9501.8 | 8859.2 | 2983.6 | 2947.5 |
| 2000 | 13617.4 | 10447.5 | 9469.9 | 3169.9 | 3016.5 |
| 2001 | 14182.5 | 10801.9 | 9733.0 | 3380.6 | 3171.3 |
| 2002 | 14736.6 | 11128.8 | 9929.4 | 3607.8 | 3349.2 |
| 2003 | 15506.7 | 11646.5 | 10324.5 | 3860.2 | 3556.9 |
| 2004 | 16352.9 | 12250.3 | 10903.9 | 4102.6 | 3775.0 |
| 2005 | 17487.9 | 13120.4 | 11710.6 | 4367.5 | 4005.2 |
| 2006 | 18766.3 | 14130.9 | 12618.0 | 4635.4 | 4238.6 |
| 2007 | 20136.9 | 15183.2 | 13690.6 | 4953.7 | 4544.0 |
| 2008 | 21891.1 | 16587.5 | 15083.4 | 5303.6 | 4868.0 |