Table:
|  |  | Years Ended June 30, |  |
| --- | --- | --- | --- |
| ($ in millions) | 2019 | 2018 | 2017 |
| Cost Data: |  |  |  |
| Repairs and maintenance costs | $120.4 | $108.0 | $99.1 |
| Cash Flow Data: |  |  |  |
| Noncash investing and financing activities: |  |  |  |
| Noncash purchases of property, plant, equipment and software | $16.1 | $16.5 | $13.7 |
| Cash paid (received) during the year for: |  |  |  |
| Interest payments, net | $27.6 | $29.5 | $27.7 |
| Income tax payments (refunds), net | $27.5 | $33.7 | $(33.3) |
Paragraphs:
21. Supplemental Data
The following are additional required disclosures and other material items:
Question:
In which year was Repairs and maintenance costs the largest?
Answer: Because 120.4>108.0>99.1, the answer is: 2019.