Current year is displayed rather than next year

The Special Prices by default are not tied to one specific year. This means that they will be applied on any future year unless you enable the setting "Tied to the Year".

Do not worry if the Special Prices list is showing your rate modifier for a date in the past of the current year, if you make a search for the next year, you will see the Special Price applied to the default rates.

From the page Rates Overview of the back-end you will see the Special Price actually being applied to the year you selected during the creation. If you don't need this Special Price to be applied on future dates then you should just enable the setting "Tied to the Year" and the year you selected will be displayed in the list.