PDF smaller than .cdr file

 Good Day,

 I am having a problem when publishing a .cdr file to PDF.  The image on the PDF is about 6% smaller than the original Corel File.  In this case the border of the artwork was 66mm in Corel and the one in the PDF file was 62mm.  Are there any settings / tricks to ensure that the PDF image is exactly the same as the original Corel file?

 Many thanks in advance.