On January 1, 2012, a machine was purchased for $109,800. The machine has an estimated salvage value of $7,320 and an estimated useful life of 5 years. The machine can operate for 122,000 hours before it needs to be replaced. The company closed its books on December 31 and operates the machine as follows: 2012, 24,400 hrs; 2013, 30,500 hrs; 2014, 18,300 hrs; 2015, 36,600 hrs; 2016, 12,200 hrs.

Compute the annual depreciation charges over the machine