Kylie Minogue's last single was her least successful. Only reached 96.
Madonna's last single also failed to make the top 40:
You can see how hard it is for older artists to have chart singles success. Times change! Teenagers aren't going to relate to artists like Madonna, Kylie and Cher.
That is true but these artists are legends and there is always fans out there that will buy there music. There singles may not sell as well but the albums will and their tours will sell. Cher's tour I reckon will be one of the highest grossing tours in 2014.