$25 I Bond with 3.30% Fixed Rate Purchased July 1999

 Jan
1
Infla
tion
Rate
Com
posite
Rate
Feb
1
Mar
1
Apr
1
May
1
Jun
1
Jul
1
Infla
tion
Rate
Com
posite
Rate
Aug
1
Sep
1
Oct
1
Nov
1
Dec
1
1999 25.000.86%5.05%25.1025.2125.3125.4225.521999
200025.631.76%6.88%25.7725.9226.0726.2126.3626.511.91%7.18%26.6726.8226.9827.1427.302000
200127.461.52%6.39%27.6027.7527.9028.0428.1928.341.44%6.23%28.4928.6328.7828.9329.072001
200229.221.19%5.72%29.3629.5029.6329.7729.9130.060.28%3.87%30.1630.2530.3530.4530.542002
200330.641.23%5.80%30.7930.9331.0831.2331.3831.531.77%6.90%31.7131.8932.0732.2532.432003
200432.620.54%4.40%32.7432.8632.9833.1033.2233.341.19%5.72%33.5033.6533.8133.9734.132004
200534.291.33%6.00%34.4634.6334.8034.9735.1535.321.79%6.94%35.5235.7235.9336.1336.342005
200636.552.85%9.09%36.8237.1037.3737.6537.9338.210.50%4.32%38.3538.4838.6238.7638.902006
200739.041.55%6.45%39.2539.4639.6639.8740.0940.301.21%5.76%40.4940.6840.8841.0741.262007
200841.461.53%6.41%41.6841.9042.1242.3442.5642.792.42%8.22%43.0843.3743.6643.9544.252008
200944.552.46%8.30%44.8545.1645.4745.7746.0946.40-2.78%0.00%46.4046.4046.4046.4046.402009
201046.401.53%6.41%46.6446.8947.1447.3947.6447.890.77%4.87%48.0848.2848.4748.6648.862010
201149.060.37%4.05%49.2249.3949.5549.7249.8950.052.30%7.98%50.3850.7151.0451.3751.712011
201252.051.53%6.41%52.3252.6052.8853.1653.4453.721.10%5.54%53.9754.2154.4654.7154.962012
201355.210.88%5.09%55.4455.6755.9156.1456.3856.620.59%4.50%56.8357.0457.2557.4757.682013
201457.890.59%4.50%58.1158.3258.5458.7658.9759.190.92%5.17%59.4459.7059.9560.2160.462014
201560.720.74%4.80%60.9661.2061.4461.6961.9362.18-0.80%1.67%62.2762.3562.4462.5362.612015
201662.700.77%4.87%62.9563.2063.4663.7163.9764.230.08%3.46%64.4164.6064.7864.9765.152016
201765.341.38%6.11%65.6766.0066.3366.6667.0067.340.98%5.29%67.6367.9368.2268.5268.822017
201869.121.24%5.82%69.4569.7870.1270.4570.7971.13

From $25.00 to $71.13 over 19.0 years = 5.58% average annual increase compounded semi-annually.

Generated  11/17/17  15:20