{
  "fields": [
    {
      "name": "year",
      "type": "integer",
      "title": "Year"
    },
    {
      "name": "month",
      "type": "string",
      "title": "Month"
    },
    {
      "name": "births",
      "type": "integer",
      "title": "Births"
    },
    {
      "name": "deaths",
      "type": "integer",
      "title": "Deaths"
    },
    {
      "name": "marriages",
      "type": "integer",
      "title": "Marriages"
    }
  ],
  "missingValues": [
    ""
  ],
  "primaryKey": [
    "year",
    "month"
  ]
}