To estimate the FFO/Net debt ratio for 2022 (based on 2022-01-01 to 2023-01-01 data), we apply the following logic based on standard S&P methodology:

1. **FFO (Funds From Operations):**
   - Typically calculated as "Cash Flows From Used In Operating Activities" adjusted for non-cash items and changes in working capital, or simply identified as the cash flow provided by operating activities.
   - Per the report: "Cash Flows From Used In Operating Activities" (2022-01-01 - 2023-01-01) = 2,019,859,000 EUR.
   - Adjustments: FFO often excludes changes in working capital. However, strictly using the provided operating cash flow is the common approach here. 
   - Note: The provided "Cash Flows From Used In Operating Activities" already includes the "Cash Flows From Used In Operating Activities" figure of 2,019,859,000 EUR.

2. **Net Debt:**
   - S&P Net Debt = (Total Financial Liabilities) - (Cash and Cash Equivalents).
   - "Noncurrent Financial Liabilities" (2023-01-01): 2,844,559,000 EUR
   - "Current Financial Liabilities" (2023-01-01): 1,109,297,000 EUR
   - Total Gross Financial Debt = 2,844,559,000 + 1,109,297,000 = 3,953,856,000 EUR.
   - "Cash and Cash Equivalents" (2023-01-01): 409,252,000 EUR.
   - Net Debt = 3,953,856,000 - 409,252,000 = 3,544,604,000 EUR.

3. **FFO / Net Debt Ratio:**
   - Calculation: 2,019,859,000 / 3,544,604,000 = 0.56984...

Rounding the result to the standard representation: 0.5698

<answer>0.5698</answer>