According to Nielsen's 2018 Mid-Year Music Report,
Americans streamed a record of 403 billion (!) songs in the first six months of 2018. That is already two thirds of last year's total, suggesting that the streaming boom will not be coming to an end this year.
As the following chart illustrates, the number of songs streamed over the internet has increased nearly sixfold between 2013 and 2017. Streaming, both ad-supported and subscription-based, now accounts for 65 percent of U.S. music revenues
and has long replaced CDs and downloads as the number one way of music consumption