How often in a game should you guve out magical items?

@ChrisPerkinsDnD how often in a game should you guve out magical items?

— Mark Brennan (@DMSAYSROLLINIT) August 25, 2016

By the time the party hits 11th lvl, each PC might have 2 magic items, not counting potions and scrolls. #WOTCstaff https://t.co/KNI0n37Da3

— (((Chris Perkins))) (@ChrisPerkinsDnD) August 25, 2016