The study, which found the total economic value of the National Parks Service's programs to be $92 billion, clearly demonstrates the public's shared perception of the incredible benefits of national parks and programs, whether they personally visit parks or not. In fact, 95% of the American public said that protecting national parks for future generations was important and 80% would pay higher federal taxes to ensure the protection and preservation of the National Park System.

https://www.nps.gov/orgs/1207/06-30-2016a.htm