Spline chart. Data table with 21 rows and 3 columns follows.

EUR CZK
30/06/2021 1
30/09/2021 0,998
31/12/2021 0,998
31/03/2022 1,034 1
30/06/2022 1,139 1,105
30/09/2022 1,112 1,078
31/12/2022 1,214 1,157
31/03/2023 1,236 1,19
30/06/2023 1,233 1,19
30/09/2023 1,221 1,181
31/12/2023 1,441 1,413
31/03/2024 1,435 1,414
30/06/2024 1,452 1,43
30/09/2024 1,459 1,438
31/12/2024 1,634 1,621
31/03/2025 1,656 1,638
30/06/2025 1,676 1,654
30/09/2025 1,707 1,675
31/12/2025 2,032 1,991
31/03/2026 2,015 1,985