Sales of cassettes and CDs already far outstripped those (replace sales) of 12-inch glossy black platters (replace vinyl).
In the 1990s vinyl (an item as a subject) almost vanished (better description than use reach the bottom, reduce to the lowest level etc) altogether.
In 2005 a mere $14m-worth of records (this is an excellent subject number plus a noun) were sold ('records were sold' suits subject-verb agreement) in America.
In the first half of this year, the RIAA says, sales reached $224m, up by 13% year on year (a great description of figure increase).
In 2019 as a whole (useful expression of a whole year) they should reach $500m and exceed those (replace sales) of CDs for the first time since 1986.
Vinyl (an item as a subject) still accounts for (only used if a subject is an item) only 4% of the market for recorded music.
Sales of CDs have been declining (an pretty useful tense and aspect) fast.