AMERICAN TOWER CORPORATION AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued) Maturities—As of December 31, 2007, aggregate carrying value of long-term debt, including capital leases, for the next five years and thereafter are estimated to be (in thousands):
## Table 0 ##
4.
ACQUISITIONS During the years ended December 31, 2007, 2006 and 2005, the Company used cash to acquire a total of (i) 293 towers and the assets of a structural analysis firm for approximately $44.0 million in cash (ii) 84 towers and 6 in-building distributed antenna systems for approximately $14.3 million and (iii) 30 towers for approximately $6.0 million in cash, respectively.
The tower asset acquisitions were primarily in Mexico and Brazil under ongoing agreements.
During the year ended December 31, 2005, the Company also completed its merger with SpectraSite, Inc.  pursuant to which the Company acquired approximately 7,800 towers and 100 in-building distributed antenna systems.
Under the terms of the merger agreement, in August 2005, SpectraSite, Inc.  merged with a whollyowned subsidiary of the Company, and each share of SpectraSite, Inc.  common stock converted into the right to receive 3.575 shares of the Company’s Class A common stock.
The Company issued approximately 169.5 million shares of its Class A common stock and reserved for issuance approximately 9.9 million and 6.8 million of Class A common stock pursuant to SpectraSite, Inc.  options and warrants, respectively, assumed in the merger.
The final allocation of the $3.1 billion purchase price is summarized in the Company’s Annual Report on Form 10-K for the year ended December 31, 2006.
The acquisitions consummated by the Company during 2007, 2006 and 2005, have been accounted for under the purchase method of accounting in accordance with SFAS No.141 “Business Combinations” (SFAS No.141).
The purchase prices have been allocated to the net assets acquired and the liabilities assumed based on their estimated fair values at the date of acquisition.
The Company primarily acquired its tower assets from third parties in one of two types of transactions: the purchase of a business or the purchase of assets.
The structure of each transaction affects the way the Company allocates purchase price within the consolidated financial statements.
In the case of tower assets acquired through the purchase of a business, such as the Company’s merger with SpectraSite, Inc. , the Company allocates the purchase price to the assets acquired and liabilities assumed at their estimated fair values as of the date of acquisition.
The excess of the purchase price paid by the Company over the estimated fair value of net assets acquired has been recorded as goodwill.
In the case of an asset purchase, the Company first allocates the purchase price to property and equipment for the appraised value of the towers and to identifiable intangible assets (primarily acquired customer base).
The Company then records any remaining purchase price within intangible assets as a “network location intangible.
”
Results of Operations – Other The following table presents consolidated financial information for the Other segment for the years indicated:
## Table 1 ##
Year ended September 30, 2010 Compared with the Year ended September 30, 2009 - Other Pre-tax loss arising from this segment increased $21 million, or 106%, for the year as compared to the prior year.
This decrease was driven by the interest expense on our senior debt issued in August, 2009.
Annual interest expense on this debt is $26 million.
The increase over the prior year is because the prior year included approximately two months of this interest expense, as compared to a full year of interest expense in fiscal 2010.
Total revenues increased by approximately $900,000, or 13%, as compared to the prior year primarily due to a $3.4 million increase in the value of certain investments.
This increase was partially offset by a decrease in interest earnings on cash of $1.3 million, and $1.7 million fewer proceeds from company-owned life insurance which is held as a funding vehicle for non-qualified deferred compensation programs.
Year ended September 30, 2009 Compared with the Year ended September 30, 2008 - Other Revenue in the Other segment includes interest earnings on available corporate cash balances and gains/losses on corporate investments, including company-owned life insurance used as a funding vehicle for non-qualified deferred compensation programs.
Expenses in this segment are predominantly executive compensation and beginning in August 2009, interest on our senior notes.
This interest will be approximately $26 million annually.
Liquidity and Capital Resources Liquidity is essential to our business.
The primary goal of our liquidity management activities is to ensure adequate funding to conduct our business over a range of market environments.
Senior management establishes our liquidity and capital policies.
These policies include senior management’s review of short- and long-term cash flow forecasts, review of monthly capital expenditures, the monitoring of the availability of alternative sources of financing, and the daily monitoring of liquidity in our significant subsidiaries.
Our decisions on the allocation of capital to our business units consider, among other factors, projected profitability and cash flow, risk and impact on future liquidity needs.
Our treasury department assists in evaluating, monitoring and controlling the impact that our business activities have on our financial condition, liquidity and capital structure as well as maintains our relationships with various lenders.
The objectives of these policies are to support the successful execution of our business strategies while ensuring ongoing and sufficient liquidity.
During 2008, the unprecedented volatility of the financial markets, accompanied by a then severe deterioration of economic conditions worldwide, had a pronounced adverse effect on the availability of credit through traditional sources.
As a result of concern about the stability of the markets generally and the strength of counterparties specifically, many lenders reduced and, in some cases, ceased to provide funding to the financial services industry.
These conditions have improved and as of September 30, 2010, we had four committed domestic financing facilities available for borrowing in the aggregate amount of $360 million.
See the Borrowings and Financing Arrangements section below for additional information.
Liquidity is provided primarily through our business operations and financing activities.
Financing activities could include bank borrowings, repurchase agreement transactions or additional capital raising activities under the “universal” shelf registration filed with the SEC in May 2009, which is still effective and could facilitate such purposes.
Goodwill Our goodwill as of September 30, 2014 results from our fiscal year 1999 acquisition of Roney & Co.  (now part of RJ&A), our fiscal year 2001 acquisition of Goepel McDermid, Inc.  (now RJ Ltd. ), our April 1, 2011 acquisition of Howe Barnes Hoefer & Arnett, and our April 2, 2012 acquisition of Morgan Keegan (see Note 3 for additional information regarding this acquisition).
The goodwill that arose from our April 4, 2011 acquisition of a controlling interest in Raymond James European Securities, S. A.
S (“RJES”) was determined to be completely impaired in fiscal year 2013.
The following summarizes our goodwill by segment, along with the balance and activity for the years indicated:
## Table 2 ##
(1) The goodwill adjustment in the prior fiscal year arose from a change in a tax election pertaining to whether assets acquired and liabilities assumed are written-up to fair value for tax purposes.
This election is made on an entity-by-entity basis, and during the period indicated, our assumption regarding whether we would make such election changed for one of the Morgan Keegan entities we acquired.
The offsetting balance associated with this adjustment to goodwill was the net deferred tax asset.
(2) The impairment expense in the prior fiscal year ended September 30, 2013 is associated with the RJES reporting unit.
We concluded the goodwill associated with this reporting unit to be completely impaired during fiscal year 2013.
Since we did not own 100% of RJES as of the goodwill impairment testing date, for the year ended September 30, 2013 the effect of this impairment expense on the pre-tax income attributable to Raymond James Financial, Inc.  is approximately $4.6 million and the portion of the impairment expense attributable to the noncontrolling interests is approximately $2.3 million.
As described in Note 2, goodwill is subject to an evaluation of potential impairment on an annual basis, or more often if events or circumstances indicate there may be impairment.
We performed our annual goodwill impairment testing during the quarter ended March 31, 2014, evaluating the balances as of December 31, 2013.
We performed a qualitative assessment for each reporting unit that includes an allocation of goodwill to determine whether it is more likely than not that the carrying value of such reporting unit, including the recorded goodwill, is in excess of the fair value of the reporting unit.
In any instance in which we are unable to qualitatively conclude that it is more likely than not that the fair value of the reporting unit exceeds the reporting unit carrying value including goodwill, a quantitative analysis of the fair value of the reporting unit would be performed.
Based upon the outcome of our qualitative assessment, we determined that no quantitative analysis of the fair value of any reporting unit as of December 31, 2013 was required, and we concluded that none of the goodwill allocated to any of our reporting units as of December 31, 2013 was impaired.
No events have occurred since December 31, 2013 that would cause us to update our latest annual impairment testing.
In the prior fiscal year, we performed our annual goodwill impairment testing as of December 31, 2012.
For this testing, we did not choose to exercise the option to perform a qualitative assessment, but instead chose to perform a quantitative assessment of the equity value of each reporting unit that includes an allocation of goodwill.
In our determination of the reporting unit fair value of equity, we used a combination of the income approach and the market approach.
Under the income approach, we used discounted cash flow models applied to each respective reporting unit.
Under the market approach, we calculated an estimated fair value based on a combination of multiples of earnings of guideline companies in the brokerage and capital markets industry that are publicly traded on organized exchanges, and the book value of comparable transactions.
The estimated fair value of the equity of the reporting unit resulting from each of these valuation approaches was dependent upon the estimates of future business unit revenues and costs, such estimates were subject to critical assumptions regarding the nature and health of financial markets in future years as well as the discount rate to apply to the projected future cash flows.
In estimating future cash flows, a balance sheet as of the test date and a statement of operations for the last twelve months of activity for each reporting unit (or for the nine month period since the Closing Date for Morgan Keegan reporting units) were compiled.
Future balance sheets and statements of operations were then projected, and estimated future cash flows were determined by the combination of these projections.
The
Index 178 The cumulative effects of temporary differences that give rise to significant portions of the deferred tax asset (liability) items are as follows:

<table><tr><td>2008</td><td>$1,817</td></tr><tr><td>2009</td><td>1,241</td></tr><tr><td>2010</td><td>78,828</td></tr><tr><td>2011</td><td>13,714</td></tr><tr><td>2012</td><td>1,894,998</td></tr><tr><td>Thereafter</td><td>2,292,895</td></tr><tr><td>Total cash obligations</td><td>$4,283,493</td></tr><tr><td>Accreted value of the discount and premium of 3.00% Notes and 7.125% Notes</td><td>1,791</td></tr><tr><td>Balance as of December 31, 2007</td><td>$4,285,284</td></tr></table>
<table><tr><td></td><td colspan="5">Year Ended September 30,</td></tr><tr><td></td><td>2010</td><td>% Change</td><td>2009</td><td>% Change</td><td>2008</td></tr><tr><td></td><td colspan="5">($ in 000's)</td></tr><tr><td>Revenues:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Interest Income</td><td>$6,269</td><td>-17%</td><td>$7,597</td><td>-67%</td><td>$22,824</td></tr><tr><td>Other</td><td>1,787</td><td>NM</td><td>-444</td><td>71%</td><td>-1,522</td></tr><tr><td>Total Revenues</td><td>8,056</td><td>13%</td><td>7,153</td><td>-66%</td><td>21,302</td></tr><tr><td>Interest Expense</td><td>26,113</td><td>462%</td><td>4,647</td><td>-68%</td><td>14,424</td></tr><tr><td>Net Revenues</td><td>-18,057</td><td>NM</td><td>2,506</td><td>-64%</td><td>6,878</td></tr><tr><td>Other Expense</td><td>22,734</td><td>2%</td><td>22,308</td><td>-16%</td><td>26,549</td></tr><tr><td>Pre-tax Loss</td><td>$-40,791</td><td>-106%</td><td>$-19,802</td><td>-1%</td><td>$-19,671</td></tr></table>
<table><tr><td></td><td colspan="2">Segment</td><td></td></tr><tr><td></td><td>Private client group</td><td>Capital markets</td><td>Total</td></tr><tr><td></td><td colspan="3">(in thousands)</td></tr><tr><td>Goodwill at September 30, 2012</td><td>$173,317</td><td>$126,794</td><td>$300,111</td></tr><tr><td>Additions<sup>-1</sup></td><td>1,267</td><td>1,041</td><td>2,308</td></tr><tr><td>Impairment losses<sup>-2</sup></td><td>—</td><td>-6,933</td><td>-6,933</td></tr><tr><td>Goodwill at September 30, 2013</td><td>$174,584</td><td>$120,902</td><td>$295,486</td></tr><tr><td>Impairment losses</td><td>—</td><td>—</td><td>—</td></tr><tr><td>Goodwill at September 30, 2014</td><td>$174,584</td><td>$120,902</td><td>$295,486</td></tr></table>

Question: what is the total number of towers acquired in the last three years?