Non-JD enrollment at "top 20ish" law schools

My former Texas colleague John Dzienkowski calls my attention to this astonishing chart showing non-JD enrollment (mostly LLM and SJD enrollment) at some leading law schools.   LLM students are usually paying tuition, and are invisible to USNews.com rankings.   Penn, which is half the size of Harvard, has as many non-JD students, which is extraordinary.  So too is the non-JD enrollment at Northwestern, and USC.   The zero figure for Michigan must be an error.