82% rate excused rate for venire members?

This NY Times article (registration required) says that 82% of the jury pool members who show up for jury duty do not get on a jury, in statistics from the courts of New York State.

This seems high to me, but maybe it's not. I thought that in federal court locally, for the civil cases I've seen, they call maybe 20 people, stick 13 in the box, strike 3-4 for cause, give each side three peremptories, and try the case with 7. That's a rate of 65%, by the reckoning of the Times article, which says that "the rate in federal courts across the country is about 76 percent."