Download old version of CCleaner, maybe 4.17 or 4.18

I'd like to download the last free version of CCleaner before monitoring. I know 4.17 did not have monitoring, but maybe 4.18 was the last one without it. 4.19 had it. Does Piriform retain old versions on its website?

4.17 can be downloaded from here

http://filehippo.com/download_ccleaner/58488/

Thanks a lot for the quick reply. Great avatar too.