《华盛顿邮报》的一篇文章，亮点在于这两个图，供参考。
原图请查看：The U.S. has one of the stingiest minimum wage policies of any wealthy nation， https://www.washingtonpost.com/news/wonk/wp/2017/12/29/the-u-s-has-one-of-the-stingiest-minimum-wage-policies-of-any-wealthy-nation/?utm_term=.e3e59d479b12
