Keep spaces in Before/After fields

I have a custom field that stores numbers of years. I want to display this column in the table with a suffix “years” but there should be a space between the number and the word “years”. If I put a space before the word in the fields settings, it will get stripped out automatically after saving, leaving the data in the columns showing as “4years” instead of “4 years”.

http://wordpress.org/plugins/codepress-admin-columns/