Exhibit 7 Present Value of an Annuity of $1 at Compound Interest Periods 4% 41% 1 0.96154 2 1.88609 3 2.77509 4 3.62990 3.58753 5% 0.95694 0.95238 1.87267 1.85941 2.74896 2.72325 3.54595 5 4.45182 4.38998 4.32948 6 7 10 866 5.24214 5.15787 5.07569 6.00205 5.89270 5.78637 6.73274 6.59589 6.46321 6.33457 9 8.11090 7.91272 7.43533 7.26879 7.10782 7.72173 6.95220 7.53763 5% 6% 6%% 7% 10% 11% 12% 13% 0.94787 0.94340 0.93897 0.93458 0.90909 0.90090 0.89286 0.88496 1.84632 1.83339 1.82063 1.80802 1.73554 1.71252 1.69005 1.66810 2.69793 2.67301 2.64848 2.62432 2.48685 2.44371 2.40183 2.36115 3.50515 3.46511 3.42580 3.38721 3.16987 3.10245 3.03735 2.97447 4.27028 4.21236 4.15568 4.10020 3.79079 3.69590 3.60478 3.51723 4.99553 4.91732 4.84101 4.76654 4.35526 4.23054 4.11141 3.99755 5.68297 5.58238 5.48452 5.38929 4.86842 4.71220 4.56376 4.42261 6.20979 6.08875 5.97130 5.33493 5.14612 4.96764 4.79677 6.80169 6.65610 6.51523 5.75902 5.53705 5.32825 5.13166 7.36009 7.18883 7.02358 6.14457 5.88923 5.65022 5.42624