/// <summary>
        /// Gets the column headers in CSV format
        /// </summary>
        public byte[] GetHeader()
        {
            var csvWriter = new CsvWriter();

            var headings = new List <object>
            {
                "Indicator ID", "Indicator Name", "Parent Code", "Parent Name",
                "Area Code", "Area Name", "Area Type", "Sex", "Age",
                "Category Type", "Category",
                "Time period", "Value",
                "Lower CI 95.0 limit", "Upper CI 95.0 limit",
                "Lower CI 99.8 limit", "Upper CI 99.8 limit",
                "Count", "Denominator",
                "Value note", "Recent Trend",
                "Compared to England value or percentiles",
                GetComparedToSubNationalParentHeading(),
                "Time period Sortable",
                "New data",
                "Compared to goal"
            };

            csvWriter.AddHeader(headings.ToArray());
            var bytes = csvWriter.WriteAsBytes();

            return(bytes);
        }