Cory Booker\'s tax returns show an eye-popping financial stat that sets him apart from every other 2020 Democrat

Sen. Cory Booker, a Democrat from New Jersey and current 2020 presidential candidate, released 10 years of tax returns on Wednesday evening - and one financial stat stands out compared to the other Democratic candidates.

In 2018, Booker made $152,639 (his US Senate salary); he paid $22,781 in federal taxes (a 19% tax rate); and he donated $24,000 to charity.

His charitable donation amount equals a little more than 15% of his 2018 income, and it makes him the Democratic candidate who gave the largest monetary percentage of his salary to charity.

Here's how he stacks up compared to other 2018 Democrats vying for the White House, according to calculations from The Washington Post:

Cumulatively, Booker gave roughly $460,000 in charitable donations over the last 10 years, CNN reported.

Booker's tax returns also reveal that prior to 2018, a bulk of his income came from royalties and private speaking fees. "Booker reported $2 million in public speaking fees from 2009 to 2014 and $987,077 in royalties from 2015 to 2017," Politico reported.

One other difference in Booker's tax returns? Unlike the other candidates we know of so far, he doesn't file jointly with a spouse. Booker is dating actress Rosario Dawson, but he is not married.