The advertising industry's estimated revenue is over $500 billion per year. The top three countries in terms of dollars spent each year are the United States, Japan and China. These countries account for nearly half of annual ad spending.
The three largest advertising platforms are television, the Internet and newspapers. Forty percent of total advertising dollars is spent on television commercials, and roughly 20 percent is spent on Internet ad campaigns. Newspaper advertising has been declining as companies move toward Internet ads.
The prevalence of various advertising platforms continues to evolve as more people move to mobile products. Print advertising has been on a steady decline. Mobile ads are now taking the lead as the preferred platform.