| Revenue | 30/06/2018 | 30/06/2017 | 30/06/2016 | 30/06/2015 |
| Total revenue | 4,874,800 | 4,650,200 | 4,235,200 | 3,759,500 |
| Cost of revenue | 3,858,900 | 3,709,400 | 3,434,800 | 3,045,200 |
| Gross profit | 1,015,900 | 940,800 | 800,400 | 714,300 |
| Operating expenses |
| Research development | - | - | - | - |
| Selling general and administrative | 145,700 | 132,400 | 131,600 | 137,100 |
| Non-recurring | - | - | - | - |
| Others | - | - | - | - |
| Total operating expenses | 4,004,600 | 3,841,800 | 3,566,400 | 3,182,300 |
| Operating income or loss | 870,200 | 808,400 | 668,800 | 577,200 |
| Income from continuing operations |
| Total other income/expenses net | -34,700 | -43,300 | 13,500 | -11,700 |
| Earnings before interest and taxes | 870,200 | 808,400 | 668,800 | 577,200 |
| Interest expense | -48,600 | -62,600 | -64,100 | -64,600 |
| Income before tax | 835,500 | 765,100 | 682,300 | 565,500 |
| Income tax expense | 164,000 | 149,100 | 132,000 | 115,200 |
| Minority interest | 7,500 | 9,100 | 8,900 | 8,900 |
| Net income from continuing ops | 671,500 | 616,000 | 550,300 | 450,300 |
| Non-recurring events |
| Discontinued operations | - | - | - | - |
| Extraordinary items | - | - | - | - |
| Effect of accounting changes | - | - | - | - |
| Other items | - | - | - | - |
| Net income |
| Net income | 671,700 | 615,800 | 550,300 | 449,400 |
| Preferred stock and other adjustments | - | - | - | - |
| Net income applicable to common shares | 671,700 | 615,800 | 550,300 | 449,400 |