{
  "fields": [{"id":"_id","type":"int"},{"id":"Miesiąc","type":"timestamp"},{"id":"Przystąpienia","type":"numeric"},{"id":"Wystąpienia","type":"numeric"},{"id":"Liczba klientów na koniec miesiąca","type":"numeric"},{"id":"Liczba klientów na start miesiąca","type":"numeric"}],
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    [7,"2025-12-01T00:00:00",1205,-58,235312,234165],
    [8,"2025-11-01T00:00:00",1944,-58,234165,232279],
    [9,"2025-10-01T00:00:00",3038,-83,232279,229324],
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    [12,"2025-07-01T00:00:00",9633,-461,213576,204404],
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    [14,"2025-05-01T00:00:00",10567,-150,191523,181106],
    [15,"2025-04-01T00:00:00",12273,-73,181106,168906],
    [16,"2025-03-01T00:00:00",12444,-50,168906,156512],
    [17,"2025-02-01T00:00:00",6596,-26,156512,149942],
    [18,"2025-01-01T00:00:00",2711,-3371,149942,150602],
    [19,"2024-12-01T00:00:00",3792,-63,150602,146873],
    [20,"2024-11-01T00:00:00",6025,-91,146873,140939],
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    [25,"2024-06-01T00:00:00",8940,-127,58966,50153],
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    [27,"2024-04-01T00:00:00",13132,-152,37702,24722],
    [28,"2024-03-01T00:00:00",13972,-90,24722,10840],
    [29,"2024-02-01T00:00:00",8261,-53,10840,2632]
]}