| | 2008 | 2007 | 2006 | 2005 | 2004 | | Period End Date | 12/31/2008 | 12/31/2007 | 12/31/2006 | 12/31/2005 | 12/31/2004 | | Period Length | 12 Months | 12 Months | 12 Months | 12 Months | 12 Months | | Stmt Source | 10-K | 10-K | 10-K | 10-K | 10-K | | Stmt Source Date | 02/27/2009 | 02/28/2008 | 02/28/2007 | 02/28/2006 | 02/28/2005 | | Stmt Update Type | Updated | Updated | Updated | Updated | Updated | | | | | | | | | Revenue | 459,579.0 | 390,328.0 | 365,467.0 | 358,955.0 | 291,252.0 | | Other Revenue, Total | 17,780.0 | 14,224.0 | 12,168.0 | 11,725.0 | 6,783.0 | | Total Revenue | 477,359.0 | 404,552.0 | 377,635.0 | 370,680.0 | 298,035.0 | | | | | | | | | Cost of Revenue, Total | 321,867.0 | 263,111.0 | 242,455.0 | 242,780.0 | 189,712.0 | | Gross Profit | 137,712.0 | 127,217.0 | 123,012.0 | 116,175.0 | 101,540.0 | | | | | | | | | Selling/General/Administrative Expenses, Total | 57,592.0 | 55,843.0 | 53,476.0 | 55,956.0 | 54,803.0 | | Research & Development | 1,451.0 | 1,469.0 | 1,181.0 | 964.0 | 1,098.0 | | Depreciation/Amortization | 12,379.0 | 12,250.0 | 11,416.0 | 10,253.0 | 9,767.0 | | Interest Expense (Income), Net Operating | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | | Unusual Expense (Income) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | | Other Operating Expenses, Total | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | | Operating Income | 81,750.0 | 70,474.0 | 67,402.0 | 59,432.0 | 41,241.0 | | | | | | | | | Interest Income (Expense), Net Non-Operating | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | | Gain (Loss) on Sale of Assets | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | | Other, Net | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | | Income Before Tax | 81,750.0 | 70,474.0 | 67,402.0 | 59,432.0 | 41,241.0 | | | | | | | | | Income Tax - Total | 36,530.0 | 29,864.0 | 27,902.0 | 23,302.0 | 15,911.0 | | Income After Tax | 45,220.0 | 40,610.0 | 39,500.0 | 36,130.0 | 25,330.0 | | | | | | | | | Minority Interest | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | | Equity In Affiliates | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | | U.S. GAAP Adjustment | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | | Net Income Before Extra. Items | 45,220.0 | 40,610.0 | 39,500.0 | 36,130.0 | 25,330.0 | | | | | | | | | Total Extraordinary Items | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | | Net Income | 45,220.0 | 40,610.0 | 39,500.0 | 36,130.0 | 25,330.0 | | | | | | | | | | | | | | |  Total Adjustments to Net Income | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | | Preferred Dividends | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | | General Partners' Distributions | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| | | | | | | | | Basic Weighted Average Shares | 5,149.0 | 5,517.0 | 5,913.0 | 6,266.0 | 6,482.0 | | Basic EPS Excluding Extraordinary Items | 8.78 | 7.36 | 6.68 | 5.77 | 3.91 | | Basic EPS Including Extraordinary Items | 8.78 | 7.36 | 6.68 | 5.77 | 3.91 | | | | | | | | | Diluted Weighted Average Shares | 5,203.0 | 5,577.0 | 5,970.0 | 6,322.0 | 6,519.0 | | Diluted EPS Excluding Extrordinary Items | 8.69 | 7.28 | 6.62 | 5.71 | 3.89 | | Diluted EPS Including Extraordinary Items | 8.69 | 7.28 | 6.62 | 5.71 | 3.89 | | | | | | | | | Dividends per Share - Common Stock Primary Issue | 1.55 | 1.37 | 1.28 | 1.14 | 1.06 | | Gross Dividends - Common Stock | 8,058.0 | 7,621.0 | 7,628.0 | 7,185.0 | 6,896.0 | | Interest Expense, Supplemental | 673.0 | 400.0 | 654.0 | 496.0 | 638.0 | | Depreciation, Supplemental | 12,379.0 | 12,250.0 | 11,416.0 | 10,253.0 | 9,767.0 | | | | | | | | | Normalized EBITDA | 96,449.0 | 84,129.0 | 80,523.0 | 70,980.0 | 52,422.0 | | Normalized EBIT | 84,070.0 | 71,879.0 | 69,107.0 | 60,727.0 | 42,655.0 | | Normalized Income Before Tax | 81,750.0 | 70,474.0 | 67,402.0 | 59,432.0 | 41,241.0 | | Normalized Income After Taxes | 45,220.0 | 40,610.0 | 39,500.0 | 36,130.0 | 25,330.0 | | Normalized Income Available to Common | 45,220.0 | 40,610.0 | 39,500.0 | 36,130.0 | 25,330.0 | | | | | | | | | Basic Normalized EPS | 8.78 | 7.36 | 6.68 | 5.77 | 3.91 | | Diluted Normalized EPS | 8.69 | 7.28 | 6.62 | 5.71 | 3.89 |
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