Here is the FBI report for 2012.
https://www.fbi.gov/about-us/cjis/nics/reports/20130102_1998_2012_monthly_yearly_totals.pdf
https://www.fbi.gov/about-us/cjis/nics/reports/20130102_1998_2012_monthly_yearly_totals.pdf
That being said, it's going to be a hard fight, as we're about to start seeing in New York...
It is going to be an impossible fight. Regardless of the number of gun owners, politicians have proven time and time again that they will pretty much do whatever they want or whatever the big party dogs want them to do and almost never do what their constituents want them to do.
"Representative" is a MAJOR misnomer.