Its funny, I can't say for sure because I don't count them, but I feel like there's been a lot more lately, or at least I hear a lot more of them. When I was a kid in the early 90s they used to come through all the time, we'd get stuck waiting for them to cross Granite St. Then for quite a long time you never saw or heard them. But in the last year or so I hear them pretty often, sometimes even more than once a day. It's really nice.