In Washington itself, the percentage of notes with cocaine residue reached 93%, a prevalence almost matched by other urban areas such as Boston, Detroit and Baltimore.

• 在华盛顿，沾染可卡因的美钞比例达到93%25，而其它城区如波士顿、底特律和巴尔的摩大，也几乎与之并驾齐驱。