October 20235,5%
| Mounth | Material & energy cost surcharge |
| June 2022 | 9,4% |
| July 2022 | 9,4% |
| August 2022 | 9,1% |
| September 2022 | 10,7% |
| October 2022 | 12,0% |
| November 2022 | 12,7% |
| December 2022 | 11,4% |
| January 2023 | 8,9% |
| February 2023 | 8,7% |
| March 2023 | 8,3% |
| April 2023 | 8.1% |
| May 2023 | 7,2% |
| June 2023 | 7,3% |
| July 2023 | 6,9% |
| August 2023 | 6,5% |
| September 2023 | 5,8% |
| October 2023 | 5,5% |
| November 2023 | 5,4% |
| December 2023 | 5,3% |
| January 2024 | 5,1% |
| February 2024 | 5,1% |
| March 2024 | 5,1% |
| April 2024 | 5,0% |
| May 2024 | 5,2% |
| June 2024 | 5,4% |
| July 2024 | 5,3% |
| August 2024 | 5,2% |
| September 2024 | 5,1% |
| October 2024 | 5,3% |
| November 2024 | 5,1% |
| December 2024 | 5,1% |