Open Group Closed Group
       OPEN GROUP* - TOTAL PRESENT VALUE OF FUTURE EXPENDITURES IN EXCESS OF FUTURE REVENUE (billions of dollars)

Start year of 75-year projection period (see notes)              2000    2001    2002    2003    2004    2005    2006    2007
-------------------------------------------------------------  ------  ------  ------  ------  ------  ------  ------  ------
Old-Age, Survivors and Disability Insurance (Social Security)    3845    4207    4562    4927    5229    5704    6449    6763
Hospital Insurance (Medicare Part A)                             2699    4730    5126    6166    8492    8829   11290   12292
Supplementary Medical Insurance (Medicare Part B)                6494    8084    8125    9653   11440   12384   13131   13432
Supplementary Medical Insurance (Medicare Part D)                                                8119    8686    7884    8361
Railroad Retirement                                                77#     77      79      83      87      91     101     105
Black Lung (Part C)                                                -4      -4      -5      -4      -4      -5      -4      -5
-------------------------------------------------------------  ------  ------  ------  ------  ------  ------  ------  ------
Total Social Insurance Exposures (not on balance sheet)         13111   17094   17887   20825   33363   35689   38851   40948

-----------------------------------------------------------------------------------------------------------------------------
       CLOSED GROUP^ - TOTAL PRESENT VALUE OF FUTURE EXPENDITURES IN EXCESS OF FUTURE REVENUE (billions of dollars)

Start year of 75-year projection period (see notes)              2000    2001    2002    2003    2004    2005    2006    2007
-------------------------------------------------------------  ------  ------  ------  ------  ------  ------  ------  ------
Old-Age, Survivors and Disability Insurance (Social Security)    9636   10542   11215   11742   12551   13584   14975   16265
Hospital Insurance (Medicare Part A)                             4529    6012    6409    7286    9255    9621   12153   12044
Supplementary Medical Insurance (Medicare Part B)                5384    6471    6487    7719    9054    9900   10630   10347
Supplementary Medical Insurance (Medicare Part D)                                                6306    6818    6255    6273
Railroad Retirement                                               105#    105     107     110     112     116     132     133
Black Lung (Part C)                                                 0       0       0       0       0       0       0       0
-------------------------------------------------------------  ------  ------  ------  ------  ------  ------  ------  ------
Total Social Insurance Exposures (not on balance sheet)         19654   23130   24218   26857   37278   40039   44145   45062

Gross Domestic Product                                           9710   10058   10377   10809   11500   12238   13016   13668

=============================================================================================================================
       OPEN GROUP* - TOTAL PRESENT VALUE OF FUTURE EXPENDITURES IN EXCESS OF FUTURE REVENUE (percent of GDP)

Start year of 75-year projection period (see notes)              2000    2001    2002    2003    2004    2005    2006    2007
-------------------------------------------------------------  ------  ------  ------  ------  ------  ------  ------  ------
Old-Age, Survivors and Disability Insurance (Social Security)    39.6    41.8    44.0    45.6    45.5    46.6    49.5    49.5
Hospital Insurance (Medicare Part A)                             27.8    47.0    49.4    57.0    73.8    72.1    86.7    89.9
Supplementary Medical Insurance (Medicare Part B)                66.9    80.4    78.3    89.3    99.5   101.2   100.9    98.3
Supplementary Medical Insurance (Medicare Part D)                                                70.6    71.0    60.6    61.2
Railroad Retirement                                               0.8#    0.8     0.8     0.8     0.8     0.7     0.8     0.8
Black Lung (Part C)                                               0.0     0.0     0.0     0.0     0.0     0.0     0.0     0.0
-------------------------------------------------------------  ------  ------  ------  ------  ------  ------  ------  ------
Total Social Insurance Exposures (not on balance sheet)         135.0   170.0   172.4   192.7   290.1   291.6   298.5   299.6
                                                                                                                             
-----------------------------------------------------------------------------------------------------------------------------
       CLOSED GROUP^ - TOTAL PRESENT VALUE OF FUTURE EXPENDITURES IN EXCESS OF FUTURE REVENUE (percent of GDP)                       

Start year of 75-year projection period (see notes)              2000    2001    2002    2003    2004    2005    2006    2007
-------------------------------------------------------------  ------  ------  ------  ------  ------  ------  ------  ------
Old-Age, Survivors and Disability Insurance (Social Security)    99.2   104.8   108.1   108.6   109.1   111.0   115.1   119.0
Hospital Insurance (Medicare Part A)                             46.6    59.8    61.8    67.4    80.5    78.6    93.4    88.1
Supplementary Medical Insurance (Medicare Part B)                55.4    64.3    62.5    71.4    78.7    80.9    81.7    75.7
Supplementary Medical Insurance (Medicare Part D)                                                54.8    55.7    48.1    45.9
Railroad Retirement                                               1.0#    1.0     1.0     1.0     1.0     0.9     1.0     1.0
Black Lung (Part C)                                               0.0     0.0     0.0     0.0     0.0     0.0     0.0     0.0
-------------------------------------------------------------  ------  ------  ------  ------  ------  ------  ------  ------
Total Social Insurance Exposures (not on balance sheet)         202.4   230.0   233.4   248.5   324.2   327.2   339.2   329.7

=============================================================================================================================
* Closed group includes current participants (i.e., receiving and/or are eligible to receive benefits) ages 15 and over at
  the start of the period.

^ Open group includes all current and future projected participants (i.e., individuals receiving and/or eligible to receive
  benefits ages 15 and over at the start of the period, PLUS participants estimated to receive and/or be eligible for
  benefits over the 75-yr horizon).

# Figure from 2001 (figures from 2000 were not calculated by the Railroad Retirement Board).

Notes:

1) The above tables show the present value of 75-year actuarial projections of benefit payments under current law for Social
   Security, Medicare, and other social insurance programs (see next note) in excess of their scheduled contributions and
   earmarked taxes. Not considered liabilities on the balance sheet.

2) Black Lung’s long-range actuarial projections are through 2040 when the program is scheduled to terminate (i.e., a
   33-year period).

3) Present values recognize that a dollar paid or collected in the future is worth less than a dollar today, because a dollar
   today could be invested and earn interest. To calculate a present value, future amounts are thus reduced using an assumed
   interest rate, and those reduced amounts are summed.

Source: Financial Report of the United States, Fiscal Years 2004, 2005, 2006, and 2007;
        Budget of the United States Government, FY 2009: Historical Tables, table 10.1

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