public async Task <IActionResult> CountryStats()
{
var stats = await _orderQueries.GetCountryStatsAsync(String.Empty);
var typedStats = stats
.Select(c => new { c.next, c.country, c.year, c.month, c.max, c.min, c.std, c.count, c.sales, c.med, c.prev })
.ToList();
var csvFile = File(Encoding.UTF8.GetBytes(typedStats.FormatAsCSV()), "text/csv");
csvFile.FileDownloadName = "countries.stats.csv";
return(csvFile);
}