I saw that as well. I'm guessing the graph lines are broken at 10,000 visits. That would put this year at roughly 42,000 visits. 2002-03 was just over 50,000.
In comparison, according to their website, Okemo did 480,000 visits in 1994-95.
I would guess more like 20k per line (interesting that they don't give the numbers!). I say that because IIRC I have heard that they do about 75-100k per year and most years just below 100k. I could be wrong....
Remember that Magic was doing about 16k in 2008-2009 and that was almost nothing.