Of course it has nothing to do with those who listen to digital not being stuck in the past and the vast majority moving into streaming.
In other news, shockingly, DVD sales are down too.
In other shocking news, horse drawn buggy sales vastly exceeded steam powered car sales in 2019.
Vinyl sales growth rate has outpaced CD since the 90's. Now total sales are greater too. Bound to happen
When you start at virtually 0 in 2003 .... do the math.