Аннотация данных для формата валюты не работает

В моем веб-проекте ASP.NET MVC Core на VS2015 следующая модель отображает данные как, например, 15481 вместо $15 481, хотя я использую [DisplayFormat] ниже:

Модели:

public class State
{
    [Key]
    public int StateId { get; set; }

    [Column(TypeName ="varchar(40)")]
    public string StateName { get; set; }

    [Column(TypeName = "char(2)")]
    public string StateCode { get; set; }
}

public class Sales
{
    [Key]
    public int SalesId { get; set; }
    public int? FiscalYear { get; set; }

    [DisplayFormat(DataFormatString = "{(0:C0)}")]
    public float? SaleAmount { get; set; }

    public int StateId { get; set; }
    public State State { get; set; }
}

МодельВью:

public class StatesSalesViewModel
{
    [HiddenInput]
    public int StateId { get; set; }

    [Display(Name ="State")]
    public string StateName { get; set; }
    public int? FiscalYear { get; set; }

    [DisplayFormat(DataFormatString = "{(0:C0)}")]
    public float? SaleAmount { get; set; }
}

Контроллер:

public async Task<IActionResult> FYSales(List<StatesSalesViewModel> model, string GO, int currentlySelectedIndex, string returnUrl = null)
{
    ViewData["ReturnUrl"] = returnUrl;
    ViewBag.YearsList = Enumerable.Range(1996, 29).Select(g => new SelectListItem { Value = g.ToString(), Text = g.ToString() }).ToList();

    if (!string.IsNullOrEmpty(GO))
    {
        var qryVM = from s in _context.States
                    join g in _context.Sales on s.StateId equals g.StateId
                    where g.FiscalYear == currentlySelectedIndex
                    select new StatesSalesViewModel() {StateId = s.StateId, StateName = s.StateName, SaleAmount = g.SaleAmount , FiscalYear = currentlySelectedIndex };

        return View(qryVM.ToList());
    }
}

Просмотр:

@model IList<mProject.Models.StatesSalesViewModel>

<div class="row">
    <div class="col-md-12">
        <form asp-controller="StatesSales" asp-action="getSales" asp-route-returnurl="@ViewData["ReturnUrl"]" method="post">
            @{
                IEnumerable<SelectListItem> yearsList = (IEnumerable<SelectListItem>)ViewBag.YearsList;
                var currentlySelectedIndex = 0; // Currently selected index (usually will come from model)
            }
            <strong>Select a Post Year</strong>
            <h6>Choose a year o begin:</h6>
            <label>Year:</label><select asp-for="@currentlySelectedIndex" asp-items="yearsList"></select><input type="submit" class="btn btn-default" name="GO" value="GO" />
            <table class="table">
                <thead>
                    <tr>
                        <th></th>
                        <th></th>
                        <th>Fiscal Year</th>
                        <th>State</th>
                        <th>Sales</th>
                    </tr>
                </thead>
                <tbody>
                    @for (int i=0; i< Model.Count(); i++)
                    {
                        <tr>
                            <td>@Html.HiddenFor(r => r[i].StateID)</td>
                            <td>@Html.HiddenFor(r => r[i].FYSalesID)</td>
                            <td>
                                @Html.TextBoxFor(r => r[i].FiscalYear)
                            </td>
                            <td>
                                @Html.TextBoxFor(r => r[i].StateName)
                            </td>
                            <td>
                                @Html.TextBoxFor(r => r[i].SaleAmount)
                            </td>
                        </tr>
                    }
                </tbody>
            </table>
            <button type="submit" class="btn btn-default">Save</button>
        </form>
    </div>
</div>