| （単位：百万円） | 2011/12 | 2012/12 | 2013/12 | 2014/12 | 2015/12 | 2016/12 | 2017/12 | 2018/12 | 2019/12 | 2020/12 | 2021/12 | 2022/12 | 2023/12 | 2024/12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 売上高 | 37,194 | 38,135 | 38,659 | 38,951 | 39,283 | 39,350 | 40,106 | 39,066 | 42,055 | 39,981 | 41,237 | 41,296 | 41,305 | 41,408 |
| 売上原価 | - | - | - | 22,543 | 22,976 | 22,406 | 22,684 | 21,826 | 23,735 | 22,306 | 23,345 | 24,366 | 24,432 | 24,294 |
| 売上総利益 | - | - | - | 16,408 | 16,307 | 16,943 | 17,422 | 17,240 | 18,320 | 17,675 | 17,892 | 16,930 | 16,873 | 17,113 |
| 売上総利益率（％） | - | - | - | |||||||||||
| 営業費用 | - | - | - | 14,145 | 13,754 | 14,075 | 13,779 | 13,564 | 13,940 | 13,139 | 13,334 | 13,107 | 12,826 | 12,752 |
| 営業利益 | - | - | - | 2,263 | 2,553 | 2,868 | 3,643 | 3,676 | 4,379 | 4,536 | 4,558 | 3,823 | 4,047 | 4,361 |
| 経常（税引前）利益 | 1,586 | 1,766 | 2,031 | 2,312 | 2,615 | 2,924 | 3,714 | 3,747 | 4,444 | 4,615 | 4,663 | 4,005 | 4,327 | 4,377 |
| 法人税等合計 | - | - | - | 940 | 1,174 | 1,206 | 1,318 | 1,315 | 1,514 | 1,521 | 1,501 | 1,347 | 1,469 | 1,468 |
| 純利益 | 612 | 667 | 983 | 935 | 1,377 | 1,813 | 2,391 | 2,428 | 2,926 | 2,975 | 3,030 | 2,680 | 2,872 | 2,865 |
| 一株あたり利益 | 31.48 | 34.32 | 50.52 | 48.07 | 70.79 | 89.5 | 117.23 | 119.25 | 141.96 | 149.04 | 147.4 | 129.74 | 143.2 | 148.63 |
| 一株あたり配当金 | 10 | 10 | 10 | 10 | 15 | 15 | 15 | 23 | 28 | 29 | 30 | 31 | 36 | 46 |