Cause. Hives can also be classified by the purported causative agent. Many different substances in the environment may cause hives, including medications, food and physical agents. In perhaps more than 50% of people with chronic hives of unknown cause, it is due to an autoimmune reaction. Medications
The average American pays almost 30% of their income to taxes. Here's the breakdown. According to the IRS's preliminary data from the 2015 tax year (the returns you filed during 2016), there was a total of $1.454 trillion in income tax owed, which translates to an average effective federal income tax rate of about 13.5% per return.
At 60.2%, Denmark last year had the highest top personal income tax rate among the 34 countries in the OECD, an organization of developed and emerging countries. And that 60.2% applied to income over roughly $55,000. That's a bigger bite than wealthy Californians face on their paychecks and other earned income. California, which recently raised taxes on the wealthy, now has the highest combined federal and state income tax rate in the United States.