extra space in stored proc generated table

I have the proc below.  The data portion of the returned table has an extra blank on the end of then data, except for the last row.   I need to get rid of this blank.  Even though I've added ltrim and rtrim, I'm still getting it.  How can I get rid of it?

CREATE FUNCTION [dbo].[Split_PValues]
(
      @RowData nvarchar(2000)
)  
RETURNS @RtnValue table
(
      Id int identity(1,1),
      Data varchar(100)
)
AS  
BEGIN
      Declare @Cnt int
      Set @Cnt = 1
      Declare @delimiter nvarchar(7)
      Set @delimiter = 'Annual:'

      While (Charindex(@delimiter,@RowData)>0)
      Begin
            IF @Cnt > 1      Insert Into @RtnValue (data)
            
            Select Data = ltrim(rtrim(Substring(@RowData,1,Charindex(@delimiter, @RowData)-1)))
            
            Set @RowData = Substring(@RowData,Charindex(@delimiter, @RowData) + len(@delimiter),len(@RowData))
            Set @RowData = ltrim(rtrim(@RowData))                        
                                                
            Set @Cnt = @Cnt + 1
      End
            
      Insert Into @RtnValue (data)
      Select Data = ltrim(rtrim(@RowData))

      Return
END