This is a quote from Courtney Love in the year 2000.
There was an older article (year 2000) referenced on CV:
The paragraph that deals with sales figures is:
"Artists want to believe that we can make lots of money if we're successful. But there are hundreds of stories about artists in their 60s and 70s who are broke because they never made a dime from their hit records. And real success is still a long shot for a new artist today.
Of the 32,000 new releases each year,
only 250 sell more than 10,000 copies.
And less than 30 go platinum."