@ bemused---
I read the article from the site you linked. You are correct:
"There were 55,544 non-fatal injuries in 2011 resulting from assaults involving guns — up from 53,738 in 2010 and 44,466 in 2009, the CDC’s database shows. Since 2001, the rate of gun injuries is the second highest in 11 years when adjusted for population."
but, interestingly enough, the article adds:
"However, Barber said gun violence has “dropped precipitously” from the early 1990s — a trend criminologists chalked up to “changes in the crack cocaine market.” Her observation is supported by crime data and surveys.
The CDC’s most current data show there were 11,078 homicides committed with guns in 2010 — or about 30 per day. The CDC data also show gun homicides have declined each year since 2007, falling from 12,791 in 2006 to 11,078 in 2010, even as the nation’s population grows. In fact, the homicide rate in 2010 (3.6 per 100,000 people) was the lowest since at least 1981 — which is as far back as the CDC’s online database goes."