Bad final dimensions in pixels.

Hello, i have a long-term problem with dimensions in corel draw x7. When I create an object (square, rectangle, etc,  who should have dimensions - 181 x 67 px.

When  i export this - final dimensions is 182x68 px.  Absolutely do not know what wrong,

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

I talked to a lot of graphics as they work in Corel and nobody helped me so far. They are all too clever but this basic thing never resolved.

My last chance is thus this forum and I hope that what coorelu professionals dedicated years to help me. Thanks

Here is screenshots of my problem - http://imgur.com/a/UFJtE

And here you can download this file - http://s000.tinyupload.com/index.php?file_id=13403873822006316537