Most observers agree that 2015 will be a decent-or-better year for ad spending.  But how will it break down by media segment?

Industry and market forecasting firm Strategy Analytics has just released its latest U.S. advertising spend forecast, which it expects to total almost $190 billion.  That’s about a 3% increase over 2014.

But there are wide variations in the growth expectations depending on the media type.

Digital advertising leads the pack, with an expected growth increase in double digits, while at the other end of the scale, print advertising is forecast to drop by approximately 8%:

• Digital advertising: 13.0% increase in 2015 U.S. ad spend
• Outdoor advertising: +4.8%
• Cinema advertising: +3.4%
• Radio advertising: +1.8%
• TV advertising: +1.7%
• Print advertising: -7.9%

Of course, “digital advertising” is a broad category, and within it Strategy Analytics expects certain sub-categories to grow at a faster clip:  Social media advertising looks to be the star in 2015 (+31%), followed by video advertising (+29%) and mobile advertising (+20%).

Even with these lucrative growth expectations, search advertising (SEM) will continue to represent the lion’s share of digital ad revenues – around 45%.

Also, despite the dramatic growth of digital, the segment isn’t expected to break 30% of all U.S. advertising in 2015.  The more traditional TV ad segment continues to lead all others, although it has fallen below the 50% share of all advertising in recent years.

Here’s what Strategy Analytics is forecasting for ad expenditures by media segment for 2015:

• TV advertising: ~$79 billion in 2015 U.S. ad spending
• Digital advertising: ~$53 billion
• Print advertising: ~$28 billion
• Radio advertising: ~$18 billion
• Outdoor advertising: ~$9 billion
• Cinema advertising: ~$1 billion

Leika Kawasaki, a digital media analyst and one of the Strategy Analytics Advertising Forecast report’s co-authors, notes that  looking ahead to 2018, TV’s share of advertising revenue is expected to fall further to ~40%, while digital advertising’s share will reach ~35%.

However, it’s not that TV’s volume will be declining — it’s more that digital will be robbing more funds from other segments (particularly radio and print).

Additional details on the 2015 forecast can be viewed here — if you wish to shell out $7,000 for the report, that is.