Trump says no to Dh1.5M salary: Who else said no?

President-elect Trump has stated emphatically throughout his campaign that he would not accept any of his presidential salary due to him during his term.

President-elect Trump has stated emphatically throughout his campaign that he would not accept any of his presidential salary due to him during his term. He plans on keeping his promise. 
"I'm not going to take the salary. I'm not taking it," he told CBS's "60 minutes," confirming a promise he made in a campaign video in September.
"I think I have to by law take $1, so I'll take $1 a year," he added.
Who are the other Presidents to forgo the presidential salary?
1. John F. Kennedy in 1962
 According to the Independent Journal Review, John F. Kennedy was the most moneyed man ever sworn into the presidency, and he didn't keep a single penny. He donated the entirety of his presidential salary.
2. Herbert Hoover in 1929
According to the Independent Journal Review his family made most of their fortune through mining. A generous president he split his salary between his staff and charities.
What is the salary of the president of the United States?
According to Google, the president has earned a $400,000 annual salary since 2001, along with a $50,000 annual expense account, a $100,000 nontaxable travel account, and $19,000 for entertainment. The most recent raise in salary was approved by Congress and President Bill Clinton in 1999 and went into effect in 2001.
How much did the first president make?
According to PresidentUSA.net the first president of the United States of America, George Washington made $25,000 in 1789.
Do presidents still get a salary once they are out of office?
The answer is yes they do! CNN reports that, when a president leaves the White House he's still on the government payroll, receiving an annual pension of about $200,000, health care, paid official travel and an office.