I got the year wrong, 1995. 1998 is when they kicked out inspectors.
http://www.csis-scrs.gc.ca/eng/miscdocs/200005_e.html
"The Iraqi government in August 1995 admitted to having produced 19,000 litres of botulinum toxin (BTX), 8,500 litres of anthrax, and 2,400 litres of the cancer-producing agent aflatoxin; to have loaded BTX and anthrax on Scud missile warheads and aerial bombs; and to have conducted research on mycotoxins and infectious viruses. It also claimed to have destroyed the agents after the 1991 Gulf War, but has failed to produce evidence to support such a claim. "