How much junk mail does each home receive?

Ross Johnston from New Brighton, Christchurch has twice collected a year’s worth of junk mail. “I was curious to see how much mail came in the post, because I don’t like waste”, Ross Johnston told In 1992 he collected 51kg and in 2006 he collected a 1.7m tall stack of junkmail weighing 70kg.
Source: JUNK MAIL MOUNTAIN GROWS, Ian STEWARD. 6 January 2007, The Press (Christchurch)