How long does a CCleaner Pro license last for?

Hi everyone,

I was thinking about getting the CCleaner Pro today but I'm not sure how long that will last for. Is it a yearly thing?

Thanks a lot!

'5. TERM AND TERMINATION OF SERVICES

The Services shall start on the date on which Piriform sends a confirmatory email to you confirming full payment of the support and update fees and issuing your user account details, and shall continue for a period of 1 year or for such other period as we may agree with you in writing.'

All at http://www.piriform.com/legal/software-license/ccleaner-professional