Peace spreads?

Following on from my post last month about the apparent spread of peace, the Atlantic have a helpful graph that summarises the Human Security Report.

violence

The number of ongoing armed conflicts is 40 percent lower now than in 1992, and the number of deadly conflicts—defined as wars leading to 1,000 or more combat deaths—is 80 percent lower. The number of military coups and attempted coups was 60 percent lower in 2004 than in 1963. And the annual number of victims of genocides and mass killings fell by 80 percent from 1989 to 2001, even taking such places as Bosnia and Rwanda into account. 
The exception to this generally positive trend, of course, is terrorism.