human
federal realty investment trust schedule iii summary of real estate and accumulated depreciation 2014continued three years ended december 31, 2009 reconciliation of accumulated depreciation and amortization (in thousands).
| Balance, December 31, 2006 | $740,507 |
| --------- | --------- |
| Additions during period—depreciation and amortization expense | 96,454 |
| Deductions during period—disposition and retirements of property | (80,258) |
| Balance, December 31, 2007 | 756,703 |
| Additions during period—depreciation and amortization expense | 101,321 |
| Deductions during period—disposition and retirements of property | (11,766) |
| Balance, December 31, 2008 | 846,258 |
| Additions during period—depreciation and amortization expense | 103.698 |
| Deductions during period—disposition and retirements of property | (11,869) |
| Balance, December 31, 2009 | $938,087 |
.
Please compute the result.
combined, what were the additions in 2006 and 207?
assistant
197775.0
human
and in 2008?
assistant
103.698
human
and converting this value into millions?
assistant
103698.0
human
now combined with the values from 2006 and 2007?
assistant
301473.0
human
so what is the average of these values?
assistant
100491.0