Moving yearly Total Data / month

all values are listed as: GB

   time  |       up     down
---------+------------------
2023-04  |  506.628  358.583
2023-05  |  504.692  348.714
2023-06  |  511.912  343.904
2023-07  |  512.979  335.941
2023-08  |  503.445  326.545
2023-09  |  493.622  316.114
2023-10  |  448.948  272.304
2023-11  |  422.035  241.395
2023-12  |  437.390  241.078
2024-01  |  460.459  264.334
2024-02  |  498.267  301.920
2024-03  |  529.405  324.678
2024-04  |  476.222  273.194