That's OK. You appear able to provide data printed no later than 1993 which pertains to events in 1997:
Rates of Household Firearm Ownership and Homicide Across US Regions and States, 1988–1997
Vol 92, No. 12 | American Journal of Public Health 1988-1993 | December 2002 | Matthew Miller, MD
Time travel makes up for lack of data.