Specifically, sales and streams of albums and songs grew by 12.5% last year in the US, driven by a 59% increase in on-demand audio streams.
Nielsen also noted that seven of the top 10 ‘most consumed’ albums were R&B / Hip-Hop albums, with these genres collectively seeing a 72% increase in audio-only on-demand streams last year.
There’s also a data-point lacking from the UK stats: the volume of on-demand video streams (i.e. YouTube).
When converted into album-equivalent form, consumption was 636.7m units in the US last year, but Billboard notes that when video is stripped out, the total was 491.6m units – thus on-demand video accounted for 145.1m album-equivalent units in the US in 2017: 22.8% of overall consumption.