| （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 | 38,882 | 39,545 | 40,963 | 50,031 | 52,105 | 52,521 | 53,268 | 49,906 | 50,683 | 48,539 | 47,935 | 47,971 | 50,539 | 52,063 |
| 売上原価 | - | - | - | 39,963 | 42,315 | 42,041 | 42,996 | 39,425 | 40,124 | 37,790 | 36,036 | 36,370 | 38,253 | 38,491 |
| 売上総利益 | - | - | - | 10,067 | 9,790 | 10,479 | 10,272 | 10,481 | 10,558 | 10,748 | 11,899 | 11,601 | 12,285 | 13,571 |
| 売上総利益率（％） | - | - | - | |||||||||||
| 営業費用 | - | - | - | 6,876 | 8,581 | 9,277 | 9,573 | 9,054 | 9,243 | 8,799 | 8,201 | 8,414 | 8,958 | 10,177 |
| 営業利益 | - | - | - | 3,191 | 1,209 | 1,202 | 698 | 1,426 | 1,314 | 1,948 | 3,697 | 3,187 | 3,327 | 3,394 |
| 経常（税引前）利益 | 2,776 | 2,887 | 2,664 | 3,000 | 1,080 | 937 | 717 | 1,368 | 1,257 | 1,909 | 3,668 | 3,158 | 3,118 | 3,361 |
| 法人税等合計 | - | - | - | 1,669 | 1,335 | 1,945 | 875 | 1,023 | 1,788 | 977 | 1,466 | 1,451 | 1,307 | 1,420 |
| 純利益 | 39 | 1,194 | 1,514 | 2,343 | -142 | 2,039 | 1,246 | 1,327 | 1,570 | 1,722 | 2,511 | 2,155 | 2,673 | 3,266 |
| 一株あたり利益 | 1.98 | 59.99 | 76.07 | 117.69 | -7.21 | 105.54 | 59.69 | 71.57 | 84.83 | 100.55 | 146.75 | 123.6 | 145.23 | 181.38 |
| 一株あたり配当金 | 32 | 32 | 32 | 32 | 32 | 40 | 36 | 38 | 50 | 60 | 60 | 60 | 80 | 90 |