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| Return on Equity | Operating Income Growth Rate | Turnover of Total Assets | Debt to Asset Ratio | Voluntary disclosure index |
| Return on Equity | 1 |
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|
|
|
| Operating Income Growth Rate | 0.268** | 1 |
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|
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| Turnover of Total Assets | 0.234** | 0.239** | 1 |
|
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| Debt to Asset Ratio | 0.094 | 0.044 | 0.042 | 1 |
|
| Voluntary disclosure index | 0.040 | 0.092 | 0.367** | −0.044 | 1 |