44. Assume the following property and equipment footnote was obtained from the Deere & Company's 2016 10-K. Property and Depreciation A summary of property and equipment at October 31 follows: Average Useful Lives (Years) ($ millions) 2016 2015 Land Buildings and building equipment Machinery and equipment Dies, patterns, tools, etc All other Construction in progress Total at cost Less accumulated depreciation Total 25 10 7 5 $ 79 1,490 2,961 1,039 589 232 6,390 4,113 $2,277 $ 75 1,419 2,870 987 571 156 6,078 3,966 $2.112 During 2016, the company reported $636.5 million of depreciation expense (this expense also includes amortization expense relating to computer software that is included with property and equipment). What is Deere & Company's estimate for the percent used up for depreciable assets for 2015