It will be nice if RadCalendar can show a popup list containing years. Currently, it supports only a list of months.
Other Telerik RAD Control families have a Year Month picker. There is a real nice one for ASP.NET. It would great if WinForms had it too. Look at this link from a Telerik page: http://demos.telerik.com/aspnet-ajax/calendar/examples/monthyearpicker/servers