Overnight on 472kHz WSPR

Last evening and overnight I was again active on 472kHz WSPR. I only went QRT at about 1000z this morning.  Fewer spots than ever!

I am really beginning to think that my QRPP 5mW ERP is buried in man-made noise now, whereas a few years ago it was not. So, either I need to raise the ERP so my signal rises above the crud, or abandon the band. A few years ago a lot more were able to copy me.