MVC 3布局页面，Razor模板，下拉列表

I want to include a drop down list of years across all the pages in my website. I assumed a good place to put this logic was in the layout page (_layout.cshtml). If a user changes the year I want to change my year session (ModelBinder) to change as well. This was so easy to do with ASP.NET web forms, but seems near impossible to do in MVC. I tried a partial view with no luck. Anybody have any ideas?I want to include a drop down list of years acr