If you spent 183 days or more in a country other than Canada over the last four years then you need to provide a police clearance certificate (PCC) from that country, so yes, you do need to provide one as you spent (all of?) 2014 in your home country.
The PCC you used when applying for PR status was submitted before you left the country (we know this is so, because of processing times), so it is no longer considered valid. The PCC you supply must be issued at the end of, or after, your most recent visit to that country.
Thanks btbt!
Do I need to submit Police Clearance for minor too?