The decline in the number of violent crimes since the peak of gun control mania is quite remarkable. Here is the official graphic from the Department of Justice’s 2011 National Crime Survey showing just how steep that decline is – as Americans purchased well over 140 million guns between 1991 and the end of 2011:(pdf)
As you can see, the United States had essentially a 75% decline in violent crime rates, as restrictive gun laws were relaxed and Americans bought more than 140 million guns. The only significant change between 2010 and 2011 was a slight uptick in physical assaults. The other rates, for homicide, rape, and robbery all fell.
As you can see, there were 3.8 million violent crimes in 1974, peaking at just over four million in 1977, dropping to as low as 3.2 million in 1985, and then soaring again as the drive to pass the Brady Bill ramped up. At the peak of gun control madness in 1991-1992 there were more than 4.3 million violent crimes committed in the United States. As of 2011, that was down to 1.2 million, a 73 percent decline.