Unhappy fifth anniversary.

Thursday marks five years since the date of the last time Congress raised the federal minimum wage to a paltry $7.25 an hour. Since that time, the minimum wage has stayed flat, while the cost of living has marched steadily higher.

The Labor Department's Consumer Price Index has gained nearly 9 percent during that time, excluding volatile food and energy prices. In some cases, food and energy prices have jumped even more: Beef and gasoline, for example, are up 40 and 45 percent, respectively, since July 2009.

The average hourly earnings of private-sector employees have risen by roughly 10 percent during that time, just barely keeping up with inflation. But many low-wage Americans have missed out on even that modest raise: Roughly 1.5 million Americans made the federal minimum wage in 2013, according to the Labor Department, and many made only slightly more.

Here's a look at the price increases of a sample of different goods and services, compared to the minimum wage's flatline: SUBSCRIBE AND FOLLOW BUSINESS Get the top stories emailed every day. Newsletters may offer personalized content or advertisements. Privacy Policy Newsletter Please enter a valid email address Thank you for signing up! You should receive an email to confirm your subscription shortly. There was a problem processing your signup; please try again later Twitter

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Infographic by Jan Diehm for The Huffington Post.

A full-time, minimum wage employee will only make $15,080 per year. To put that in perspective, the federal poverty line for a family of four is $23,850.