Enrollment began in 2013 and peaked at 2.2 million new enrollees in 2016. The total fell to 1.64 million enrollees in 2017 and last year totaled 1.8 million, according to TSA figures. There are currently 8.54 million PreCheck members, compared with previous projections as high as 25 million.
The original goal was 25 million by a certain date, which I can't recall. The downward revised goal is about 12.5-13 million by the end of this year. Obviously, TSA is not going to meet that goal either.