Moving yearly Total Data / month

all values are listed as: MB

   time  |   bcast   bogey
---------+----------------
2025-04  |  10.428   0.000
2025-05  |  10.429   0.001
2025-06  |  10.429   0.001
2025-07  |  10.428   0.001
2025-08  |  10.427   0.001
2025-09  |  10.417   0.001
2025-10  |  10.416   0.001
2025-11  |  10.416   0.001
2025-12  |  10.416   0.001
2026-01  |  10.416   0.001
2026-02  |  10.416   0.001
2026-03  |  10.416   0.001
2026-04  |  10.058   0.001