Let’s go through this step-by-step.  

**Step 1 – Calculate EBITDA for 2022 and 2021**  
From the income statement data:  

*2022*  
Revenue: 20,082,000,000  
Other Revenue: 548,200,000  
Total Revenue: 20,630,200,000  

Operating costs:  
Raw Materials: 16,730,000,000  
Services: 2,105,800,000  
Employee Benefits: 601,100,000  
Other Expense: 74,900,000  
Less Other Work Capitalised: (82,500,000)  
Total Operating Costs: 19,429,300,000  

EBITDA = Total Revenue – Operating Costs = 20,630,200,000 – 19,429,300,000 = 1,200,900,000  

*2021*  
Revenue: 10,555,300,000  
Other Revenue: 400,100,000  
Total Revenue: 10,955,400,000  

Operating costs:  
Raw Materials: 6,668,500,000  
Services: 2,464,600,000  
Employee Benefits: 592,800,000  
Other Expense: 66,500,000  
Less Other Work Capitalised: (60,800,000)  
Total Operating Costs: 9,731,600,000  

EBITDA = 10,955,400,000 – 9,731,600,000 = 1,223,800,000  

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**Step 2 – Estimate Net Debt for 2022 and 2021**  
Net Debt = (Noncurrent Financial Liabilities + Current Financial Liabilities + Noncurrent Lease Liabilities + Current Lease Liabilities) – (Cash and Cash Equivalents + Current Financial Assets + Noncurrent Financial Assets)  

*2022*  
Financial Liabilities:  
Noncurrent Financial Liabilities: 5,689,900,000  
Current Financial Liabilities: 650,100,000  
Noncurrent Lease Liabilities: 55,100,000  
Current Lease Liabilities: 21,300,000  
Total Debt: 6,416,400,000  

Financial Assets:  
Cash: 1,942,400,000  
Current Financial Assets: 77,700,000  
Noncurrent Financial Assets: 151,800,000  
Total Financial Assets: 2,171,900,000  

Net Debt 2022 = 6,416,400,000 – 2,171,900,000 = 4,244,500,000  

*2021*  
Financial Liabilities:  
Noncurrent Financial Liabilities: 3,716,000,000  
Current Financial Liabilities: 499,700,000  
Noncurrent Lease Liabilities: 53,200,000  
Current Lease Liabilities: 43,400,000  
Total Debt: 4,312,300,000  

Financial Assets:  
Cash: 885,600,000  
Current Financial Assets: 29,300,000  
Noncurrent Financial Assets: 142,700,000  
Total Financial Assets: 1,057,600,000  

Net Debt 2021 = 4,312,300,000 – 1,057,600,000 = 3,254,700,000  

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**Step 3 – Net Debt/EBITDA ratios**  

2022: 4,244,500,000 / 1,200,900,000 ≈ 3.53x  
2021: 3,254,700,000 / 1,223,800,000 ≈ 2.66x  

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**Step 4 – Year-on-year change**  
Change = 3.53 – 2.66 = +0.87x  

This is an increase of more than 0.3x, meaning it’s **Deteriorating**.  

<answer>Deteriorating</answer>