The official announcement says:

> The Proclamation restricts entry for aliens as nonimmigrants to perform services in specialty occupations in the H-1B program unless their petition is accompanied by a $100,000 payment.

Nowhere in there does it say that it's annual. Note that the H1B visa is valid for 3 to 6 years, potentially longer, which dilutes the fee to $16K per year which is small money for an employer. Also, a fixed number does not keep up with inflation either.