Moving yearly Total Data / month

all values are listed as: MB

   time  |     bcast     bogey
---------+--------------------
2021-08  |   971.147     0.447
2021-09  |  1024.414     0.434
2021-10  |  1090.556     0.438
2021-11  |  1163.254     0.452
2021-12  |  1216.082     0.450
2022-01  |  1360.530     0.449
2022-02  |  1421.599     0.449
2022-03  |  1488.264     0.449
2022-04  |  1562.367     0.418
2022-05  |  1640.756     0.380
2022-06  |  1715.428     0.343
2022-07  |  1792.117     0.305
2022-08  |  1738.594     0.267