Growth has been rapid. In a September 2015 LinkedIn post, Solomon wrote that the one million campaigns set up over the previous year had raised $1 billion from nearly 12 million donors. By February 2016, the total was $2 billion. In October 2016, it was $3 billion, from 25 million donors. A NerdWallet study of medical crowdfunding said GoFundMe had indicated that $930 million of the $2 billion raised in the period the study analyzed was from medical campaigns.

https://www.bloomberg.com/news/articles/2017-06-12/america-s-health-care-crisis-is-a-gold-mine-for-crowdfunding