While answering this question I noticed that I have never come across any property which is not a dependency property (WPF Controls, no 3rd party controls). Although, when I started with WPF I remember reading somewhere that "more then 90% of properties of WPF controls are dependency properties".
Can anyone give examples/links of CLR properties in WPF controls and why it's so?
Update:
Came across this lecture: http://www.miszalok.de/Lectures/L17_WPF/C4_DependencyProperties/DependencyProperties.pdf
Which says:
Label has 18 traditional and 71 dependency properties.
Button has 18 traditional and 78 dependency properties.