Attendance has been pretty much a constant. Total handle and TV ratings, however present a sharp contrast. BC 1 garnered a 5.1 rating (still the highest) with a $16.5 mil handle. BC 26 was 0.6 and $150 mil (9 times as much wagered with 1/8 of the audience) The biggest drop in ratings took place in '06 after NBC dropped the BC. But the fact is, the ratings had been steadily dropping for 22 years with little spikes here and there.
To put the ratings into perspective, the women's college basketball championship game last year had a 2.7 rating.