Photos circulating online claim to compare the crowd size at former president Barack Obama's 2009 inauguration and Donald Trump's inauguration Friday.

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According to the Associated Press, both photos were taken shortly before noon from the top of the Washington Monument.

An estimated 1.8 million people attended President Barack Obama's first inauguration.

Estimates ahead of Friday's inauguration, expected anywhere from 700,000 to 900,000 people -- about half the amount that turned out for Obama's first inauguration -- to attend the inauguration of the 45th president.

But final counts of attendees still aren't in. Official photos from Getty and the Associated Press of the inauguration of Donald Trump Friday afternoon showed a crowded National Mall during at the time he was officially sworn in.

According to Washington's Metro system, 193,000 trips were taken as of 11 a.m. on Inauguration Day this year. The transit system said there were 513,000 trips taken on the day in 2009.

The swearing-in ceremony began around 11 a.m.

This year and in 2009, thousands of people were delayed from entering the National Mall. This year, Trump supporters were slowed down by protesters. In 2009, Obama supporters were delayed due to "logistical hold-ups at security checkpoints," the AP reported.

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