Moving yearly Total Data / month

all values are listed as: GB

   time  |    total
---------+---------
2023-04  |  867.353
2023-05  |  855.516
2023-06  |  857.897
2023-07  |  850.978
2023-08  |  832.017
2023-09  |  811.723
2023-10  |  723.053
2023-11  |  665.051
2023-12  |  679.905
2024-01  |  726.048
2024-02  |  801.274
2024-03  |  854.987
2024-04  |  749.200