Total US ad spending fell by 14.3% in H1 2009, while internet display ad spending rose by 6.5%

"Total measured advertising expenditures in the first six months of 2009 fell 14.3 percent versus a year ago, to $60.87 billion, according to TNS Media Intelligence. The results are in line with similar measurements from Nielsen, which estimated that ad spending fell 15.4 percent for the first half of the year.
[...]
Ad Spending by Media
Internet display, up 6.5 percent, and free-standing inserts, up 4.6 percent, were the only media platforms to post growth during 1H09. Print, TV, radio and outdoor were all down. Cable was off 3.6 percent; spot was down 27.1 percent and Spanish-language TV dropped 12.7 percent.
Ad Spending by Category
Automotive remained the largest category, though it was down by nearly one-third. Auto advertisers spent $4.4 billion during 1H09 compared to $6.5 billion last year. Dealer spending was off more sharply than manufacturers. Through June, auto advertising is pacing at a level one-half its 2005 peak.
The ten largest advertising categories spent a total of $33.6 billion, down 14.5 percent from a year ago. Heightened competition among wireless phone companies and TV service providers boosted telecommunications category spending to $4.3 billion, an increase of 7.5 percent. Restaurants represented the only other gain among the top 10, up 0.6 percent to $2.9 billion."
Source: TNS Media Intelligence, reported by Television Broadcast, 17th September 2009

There are more than twice as many mobile phones in use as TV sets

Source: Source: Tomi Ahonen Almanac 2009 Mobile Telecoms Industry Review
From http://www.tomiahonen.com/ebook/almanac.html

UK national newspaper sales fell by 17% between 2002 and 2008

"Consider first the overall daily national newspaper market. The monthly year-on-year drop comparing December 2008 to December 2007 was 4.5%. That compares with 2% (2007-6), 3.2% (2006-5), 1.7% (2005-4), 3.2% (2004-3) and 3.8% (2003-2). Clearly, therefore, the downward trend is accelerating."
Source: Roy Greenslade in The Guardian, 9th January 2009 using figures from the ABC
(Working to produce the aggregate decline done by me - please leave a comment if you get different figures)