| （単位：十億円） | 2014/3 | 2015/3 | 2016/3 | 2017/3 | 2018/3 | 2019/3 | 2020/3 | 2021/3 | 2022/3 | 2023/3 | 2024/3 | 2025/3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 現金同等物 | - | 18 | 17 | 17 | 19 | 18 | 20 | 71 | 77 | 39 | 46 | 39 |
| 有価証券 | - | 10 | 24 | 20 | 21 | 52 | 46 | - | 35 | 50 | 45 | 35 |
| 現金 + 有価証券 | - | 28 | 41 | 37 | 39 | 69 | 66 | 71 | 112 | 89 | 91 | 74 |
| 売掛金 | - | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 3 | 3 |
| 流動資産合計 | - | 108 | 99 | 102 | 97 | 124 | 120 | 124 | 157 | 334 | 337 | 316 |
| 有形固定資産 | - | 1,092 | 1,139 | 1,213 | 1,300 | 1,392 | 1,457 | 1,480 | 1,488 | 1,495 | 1,516 | 1,544 |
| 投資有価証券 | - | 1 | 4 | 4 | 4 | 3 | 2 | 2 | 2 | 2 | 3 | 5 |
| 固定資産合計 | - | 1,216 | 1,272 | 1,350 | 1,453 | 1,552 | 1,614 | 1,638 | 1,656 | 1,669 | 1,685 | 1,713 |
| 総資産 | - | 1,324 | 1,371 | 1,452 | 1,550 | 1,676 | 1,735 | 1,762 | 1,813 | 2,003 | 2,023 | 2,030 |
| 買掛金 | - | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 1 |
| 短期借入金 | - | 9 | 10 | 12 | 14 | 11 | 13 | - | - | 10 | 13 | 11 |
| 一年内返済予定の長期借入金 | - | 37 | 22 | 21 | 40 | 19 | 27 | 36 | 13 | 11 | 32 | 40 |
| 流動負債合計 | - | 203 | 197 | 236 | 212 | 237 | 229 | 167 | 193 | 171 | 174 | 170 |
| 固定負債合計 | - | 624 | 634 | 629 | 704 | 760 | 796 | 951 | 1,002 | 1,198 | 1,181 | 1,143 |
| 総負債 | - | 827 | 831 | 865 | 915 | 997 | 1,025 | 1,118 | 1,195 | 1,369 | 1,354 | 1,313 |
| 利益剰余金 | - | 363 | 408 | 456 | 502 | 547 | 584 | 516 | 492 | 510 | 545 | 580 |
| 株主資本 | 469 | 497 | 540 | 587 | 635 | 679 | 710 | 644 | 618 | 633 | 668 | 717 |