{
    "Society": {
        "INFORMAL": {
            "Pair_Formation_Parameters": {
                "Formation_Rate_Type": "INTERPOLATED_VALUES",
                "Formation_Rate_Interpolated_Values": {
                    "Times": [
                        1980,
                        2000,
                        2020
                    ],
                    "Values": [
                        0.2,
                        0.8,
                        0.4
                    ]
                }
            }
        }
    }
}