Casualties From Land Mines Reduced to Nearly A Third of 1999 Figures

In 1997 Princes Diana became a highly visible poster-child for the campaign to outlaw land mines as a guess of the Red Cross in Angola, a role which at the time was criticised by some Conservative politicians in a way which seems somewhat startling today. The controversy generated good publicity for the cause, of course and Prince Harry has since taken on her role of highly-visible royal patron of this cause.

Deaths from mines laid during conflicts is pretty much indiscriminate. 78% of deaths are civilian and nearly half of all deaths are from children:

Source: The Monitor:

The Ottawa Treaty, concerning the prohibition of the use, stockpiling, production and transfer of Anti-Personnel Mines and their destruction, was eventually passed into international law in 1999. By 2003 stockpile destruction deadlines began to be enforced to eradicate existing stores of these weapons.

As of 2012 Bulgaria, Costa Rica, El Salvador, France, Guatemala, Honduras, Macedonia, Malawi, Suriname, Swaziland,,Tunisia, Albania, Greece, Rwanda, Zambia, Nicaragua, Nepal, Burundi, Republic of the Congo, Denmark, Gambia, Guinea-Bissau, Jordan, and Uganda were all declared landmine free.

The Landmine and Cluster Munition Monitor (known as The Monitor) provides civil society monitoring on the humanitarian and developmental consequences of land mines, cluster munitions, and explosive remnants of war (ERW). 

Their stats for the number of mine / ERW casualties per year (1999–2012) show that in 1999 there were 9,220 deaths from land mines compared to just 3,628 by 2012:

Source: The Monitor

The Monitor reports that in absolute terms, military casualties decreased by 33% between 2011 and 2012 while civilian casualties decreased by 10%. More than half the drop in military casualties from 2011 to 2012 can be accounted for by decreases in military casualties in just three states—Colombia, Myanmar, and Pakistan.