Since 1 stream is equal to around $0.005 that means the top song of 2014 in Streaming ('Dark Horse') has made $941,180.
It's sold 4,004,000 digitally which is equal to $5,165,160 with each song at $1.29.
Though it seems low, Streaming royalties are 33% more than last year, and Streaming was also 34.7% up in total compared to last year in the first quarter.
I think overtime it can come close to digital's peak, if not peak around / over it.