1999~2011美國每年因槍擊死亡人數
http://www.gunpolicy.org/firearms/c...r_of_gun_deaths

In the United States, annual deaths resulting from firearms total

2011: 32,163
2010: 31,672
2009: 31,347
2008: 31,593
2007: 31,224
2006: 30,896
2005: 30,694
2004: 29,569
2003: 30,136
2002: 30,242
2001: 29,573
2000: 28,663
1999: 28,874

以2011年為例，全美當年15,953件殺人案當中，使用槍支的案件就佔了11,101件