2023-01-15  -2
2023-02-15  -2
2023-03-15  0
2023-04-15  3
2023-05-15  7
2023-06-15  10
2023-07-15  13
2023-08-15  13
2023-09-15  10
2023-10-15  6
2023-11-15  2
2023-12-15  0