Not to quibble, but......
The "non-firearms homicide" is actually the TOTAL number of homicides.
From the CDC
http://www.cdc.gov/nchs/data/nvsr/nvsr60/nvsr60_03.pdfAssault (homicide). . . . . . . . . . . . . . . 16,799
Assault (homicide) by discharge of firearms . . . . . 11,493
Assault (homicide) by other and unspecified means and
their sequelae . . . . . . . . . . 5,306
As well as
Firearm—In 2009, 31,347 persons died from firearm injuries in
the United States (Tables 18 and 19), accounting for 17.7% of all injury
deaths that year. The two major component causes of all firearm injury
deaths in 2009 were suicide (59.8%) and homicide (36.7%). Firearm
injuries (all intents) decreased 1.9% from 2008 to 2009. The age adjusted death rate for firearm suicide did not change from 2008,
whereas the death rate for firearm homicide decreased 5.0% in 2009
from 2008.
Intentional self–harm (suicide). . . . . . . . . . . . 36,909
Intentional self-harm (suicide) by discharge of firearms. . . 18,735
Intentional self-harm (suicide) by other and unspecified means
and their sequelae . . . . . . . . . . 18,174
Nontransport accidents . . . . . . . . . . . . . . . . . . 78,990
Falls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24,792
Accidental discharge of firearms. . . . . . . . . . . . . . 554
Accidental drowning and submersion . . . . . . . . . . . 3,517
Accidental exposure to smoke, fire and flames . . . . . . 2,756
Accidental poisoning and exposure to noxious
substances . . . . . . . . . . . . . . . . . . . . . . . . . . 31,758