Answer:
40,668
Step-by-step explanation:
The DoJ first reported a “modification” of a FISA application by the FISC in the year 2001 (related to a calendar year 2000 FISC order), more than 20 years after FISA's enactment. Only 11 denials are recorded in the entire history of the DoJ's annual FISA reports from 1979 through 2016.
I found this on a chart from gooogle, so it has to be right. Hope it helps :D