One definition of rich is getting into the top 1%. If that’s your goal, it’s becoming harder to reach.

The income needed to exit the bottom 99% of U.S. taxpayers hit $515,371 in 2017, according to Internal Revenue Service data released this week. That’s up 7.2% from a year earlier, even after adjusting for inflation.

Since 2011, when Occupy Wall Street protesters rallied under the slogan “We are the 99%,” the income threshold for the top 1% is up an inflation-adjusted 33%. That outpaces all other groups except for those that are even wealthier.

To join the top 0.1%, you would have needed to earn $2.4 million in 2017, an increase of 38% since 2011. The top 0.01% threshold has jumped 46%.

Meanwhile, the top 0.001% — an elite group of 1,433 taxpayers — earned at least $63.4 million each in 2017, up 51% since the Occupy protests.