The Soviet Air Force lost 4,000 planes in the first week of their involvement of WWII alone, almost exclusively to the Me 109. The FIRST WEEK!
Sure, many were on the ground, but destroyed is destroyed. Virtually the entire Soviet Air Force was destroyed before they got their act together, moved production, and turned out modern fighters and bombers to turn the tide. That is a LOT of airplanes!
My WWII kill list shows Germany with 62,218 aerial victories awarded in WWII. I believe the bulk were Me 109 kills. I don't know how many but it must approach 40,000 and could be more.
I seriously doubt the 12 - 15,000 number for other wars since the only other war of consequence, numbers-wise was WWII and the Germans awarded 5,070 victories in WWI.
I believe that in WWII, most air forces had more operational losses than combat losses, so a good deal of the attrition was not combat related. For instance, the Hellcat had a wonderful kill to loss ratio in combat, but lost more to operational missions by a wide margin. If wasn't alone. The Me 109 had a fair number of oeprational losses, too. I was speaking strictly about losses in air combat.