How Many Of You Guys See Spots..??

[Viet Nam Vette]

I've noticed over the last two years that the glass has what looks like water spots. You can see it on the tinted glass more so then on the clear.

I notice it around the outer edge of the windshield in the tinted section from the outside. On the side glass you can see it up close from the outside. The glass looks ok when your inside looking out.

Tried all kinds of glass cleaners.... but dem spots are still their. WTF..!!

What have you used to get rid of them?