rowid,mth
1,2021-01-01 00:00:00
2,2021-02-01 00:00:00
3,2021-03-01 00:00:00
4,2021-04-01 00:00:00
5,2021-05-01 00:00:00
6,2021-06-01 00:00:00
7,2021-07-01 00:00:00
8,2021-08-01 00:00:00
9,2021-09-01 00:00:00
10,2021-10-01 00:00:00
11,2021-11-01 00:00:00
12,2021-12-01 00:00:00
13,2022-01-01 00:00:00
14,2022-02-01 00:00:00
15,2022-03-01 00:00:00
16,2022-04-01 00:00:00
17,2022-05-01 00:00:00
18,2022-06-01 00:00:00