I actually had a neighbor ask me that the other day (she knows I'm an "ex" JW) and I didn't really know the answer. I know there's a bit of cart witnessing going on (small town) and a lot of driving around to return visits.
But are they actually doing territory, not-at-homes, all of that? The neighbor said that eight years ago, when she bought her house, the JWs were by "all the time". They haven't been seen for over three to four years, from her observation. Not a single tract found in the door.
It's been so long I wasn't sure.