net operating cost net position
                 RECONCILIATION OF THE NET OPERATING COST AND THE UNIFIED BUDGET DEFICIT (billions of dollars)
                                                                                                                                   
                                            1997    1998    1999    2000    2001    2002    2003    2004    2005    2006    2007   
                                          ------  ------  ------  ------  ------  ------  ------  ------  ------  ------  ------   
Unified budget deficit.................... -21.9    69.2   124.4   236.9   127.0  -157.7  -374.8  -412.3  -318.5  -247.7  -162.8   
Change in:                                                                                                                         
  Liability for civilian employee benefits         -39.8   -41.6   -55.2   -50.1   -38.9   -83.9   -68.7   -62.3   -81.3   -55.9   
  Liability for military employee benefits                  31.1   -39.6  -406.8   -32.4  -101.1  -143.4  -169.6   -74.9   -60.3   
  Liability for veteran's compensation....        -109.4    94.9   -69.4  -139.3  -157.3  -105.6    30.0  -197.8   -31.2    26.1   
  Environmental liabilities...............         -12.8   -88.7   -19.6    -5.7    33.8    23.1     0.7   -10.6   -45.4   -36.8   
Depreciation expense......................                 -17.3   -15.4   -21.4   -20.5   -71.2   -89.9   -79.7   -82.9   -45.3   
Total Capitalized Fixed Assets............                  41.5    31.6    34.4    40.9   102.0   112.1    53.4   103.7    58.8   
All Other Reconciling Items...............  19.3   -41.0   -67.4   -29.7   -52.9   -32.8   -56.1   -44.1    24.9    10.2     0.7
                                          ------  ------  ------  ------  ------  ------  ------  ------  ------  ------  ------   
Net operating cost........................  -2.6  -133.8    76.9    39.6  -514.8  -364.9  -667.6  -615.6  -760.2  -449.5  -275.5

                                          CHANGE IN NET POSITION (billions of dollars)

                                            1997    1998    1999    2000    2001    2002    2003    2004    2005    2006    2007
                                          ------  ------  ------  ------  ------  ------  ------  ------  ------  ------  ------
Net position, beginning of period.......         -5003.0 -6134.4 -6026.2 -5945.4 -6458.8 -6820.2 -7094.2 -7709.8 -8466.9 -8916.4
Change in accounting principle..........          -681.7                                   383.1                           -13.9
Other adjustments.......................          -315.9    31.3    41.2     1.4     3.5    10.5             3.1
Net operating cost......................    -2.6  -133.8    76.9    39.6  -514.8  -364.9  -667.6  -615.6  -760.2  -449.5  -275.5
                                          ------  ------  ------  ------  ------  ------  ------  ------  ------  ------  ------   
Net position, end of period............. -5003.0 -6134.4 -6026.2 -5945.4 -6458.8 -6820.2 -7094.2 -7709.8 -8466.9 -8916.4 -9205.8

Gross Federal Debt......................  5369.2  5478.2  5605.5  5628.7  5769.9  6198.4  6760.0  7354.7  7905.3  8451.4  8950.7
Debt Held by the Public.................  3772.3  3721.1  3632.4  3409.8  3319.6  3540.4  3913.4  4295.5  4592.2  4829.0  5035.1
Gross Domestic Product (GDP)............  8182.4  8627.9  9125.3  9709.8 10057.9 10377.4 10808.6 11499.9 12237.9 13015.5 13667.5

                                            CHANGE IN NET POSITION (percent of GDP)

                                            1997    1998    1999    2000    2001    2002    2003    2004    2005    2006    2007
                                          ------  ------  ------  ------  ------  ------  ------  ------  ------  ------  ------
Net position, beginning of period.......           -58.0   -67.2   -62.1   -59.1   -62.2   -63.1   -61.7   -63.0   -65.1   -65.2
Change in accounting principle..........            -7.9                                     3.5                            -0.1
Other adjustments.......................            -3.7     0.3     0.4     0.0     0.0     0.1             0.0
Net operating cost......................     0.0    -1.6     0.8     0.4    -5.1    -3.5    -6.2    -5.4    -6.2    -3.5    -2.0
                                          ------  ------  ------  ------  ------  ------  ------  ------  ------  ------  ------   
Net position, end of period.............   -61.1   -71.1   -66.0   -61.2   -64.2   -65.7   -65.6   -67.0   -69.2   -68.5   -67.4

Debt Held by the Public.................   -46.1   -43.1   -39.8   -35.1   -33.0   -34.1   -36.2   -37.4   -37.5   -37.1   -36.8
Gross Federal Debt......................   -65.6   -63.5   -61.4   -58.0   -57.4   -59.7   -62.5   -64.0   -64.6   -64.9   -65.5

Fiscal Year from which data was obtained    1997    1998    1999    2001    2002    2003    2004    2005    2006    2007    2007 

Source: Financial Report of the United States, Fiscal Years 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, and 2007;
        Budget of the United States Government, FY 2009: Historical Tables, tables 7.1 and 10.1

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                    SOCIAL INSURANCE EXPOSURES (billions of dollars)

                                                    2003    2004    2005    2006    2007
                                                  ------  ------  ------  ------  ------
Social Insurance Exposures (not included on the balance sheets)
Closed Group (current participants).......        -26857  -37278  -40039  -44145  -45062
Open Group (current + future participants)        -20825  -33363  -35689  -38851  -40948

Note: Social Insurance includes Social Security, Medicare, Railroad Retirement, and Black Lung
Source: Financial Report of the United States for Fiscal Year 2007

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