These are the 10 companies that spend the most on advertising

Collectively, the top 200 advertisers in the United States spent a record $137.8 billion on advertising in 2014, up 2% year on year, according to Ad Age's annual "200 Leading National Advertisers" report.

But while this reads like promising news for the advertising sector, the growth rate was the lowest since the ad market recovery began in 2010, according to the report, which notes that leading advertisers are striving to make their media buys more efficient.

Overall, there were 38 marketers that spent more than $1 billion on advertising in the US last year. Here are the top 10 biggest spenders.