Dates on MDoC

[ww]

     Folks,
     
     Various bits of literature I have here state that, with respect 
     to the LVD, our Declaration of Conformity must show the year that 
     the CE mark was first applied to the product.
     
     Can anyone tell me where in the official documents this is shown 
     as a requirement?
     
     Seems to me that this could be confusing to a customer if the 
     standards are changed/or updated.
     
     Thanks in advance,
     
     Bill Wray
     Dolby Labs
     San Franciso