Data summary

global.fetch = require("cross-fetch");

fetch("https://pastebin.com/raw/fvJkWEk5")
  .then(response => {
    return response.json();
  })
  .then(data => {

    var months = [
        "Jan",
        "Feb",
        "March",
        "April",
        "May",
        "June",
        "July",
        "August",
        "Sept",
        "Oct",
        "Nov",
        "Dec"
      ];
      var months_data = [
          {
              "female" : 0,
              "male" : 0,
          },
          {
            "female" : 0,
            "male" : 0,
        },
        {
            "female" : 0,
            "male" : 0,
        },
        {
            "female" : 0,
            "male" : 0,
        },
        {
            "female" : 0,
            "male" : 0,
        },
        {
            "female" : 0,
            "male" : 0,
        },
        {
            "female" : 0,
            "male" : 0,
        },
        {
            "female" : 0,
            "male" : 0,
        },
        {
            "female" : 0,
            "male" : 0,
        },
        {
            "female" : 0,
            "male" : 0,
        },
        {
            "female" : 0,
            "male" : 0,
        },
        {
            "female" : 0,
            "male" : 0,
        },
      ]
      json_data.map((u,i) => {
          months_data[parseInt(u.data.registration_time.split("-")[1]) - 1][u.data.sex.toLowerCase()]++;
      })
      months_data.map((u,i) => {
        console.log(months[i] + "  male " +  u.male + " female " + u.female);
      })

  })
  .catch(err => {
    console.error(err);
  });