Russian Military Technology

The Yugoslavs returned to the arms control treaty/inspections within
months
of the end of the conflict. The last time that they exchanged information
was January 1999 when they pulled out due to the on-going Kosovo
crisis.Apart from the Dayton Accord they also rejoined the Vienna Document
and in late 1999 revealed that they had lost 18 MBT and 136 ACV. They also
revealed that they had lost 50 fixed wing combat aircraft and 11 combat
helicopters.

The problem with using those statistics is that those only show operational
equipment (atleast that is how I understand it), so damaged equipment would
show as a loss too.