No, but I would say it's fair to say you'd see some results of it happening over a period of 6 year.
In comparison to the two previous seasons we'd just been relegated over the past 20 year, our average attendance has been:
05/06: 3,795
13/14: 4,738
19/20: 5,227
Most clubs had an inflated attendance (Probably due to the money being thrown about at the time) from 2000-2004, but our average attendance in the top flight has always been steadily between the 6000-7000 mark since 1989 with a few seasons of it being closer to 9000 in the aforementioned 'peak' period. And that's with no success. If we were going through the most successful period in our history I'd expect Dens to be bringing in crowds we've not witnessed since the 60's.