$50 I Bond with 3.30% Fixed Rate Purchased September 1999

 Jan
1
Feb
1
Mar
1
Infla
tion
Rate
Com
posite
Rate
Apr
1
May
1
Jun
1
Jul
1
Aug
1
Sep
1
Infla
tion
Rate
Com
posite
Rate
Oct
1
Nov
1
Dec
1
1999 50.000.86%5.05%50.2050.4250.621999
200050.8451.0451.261.76%6.88%51.5451.8452.1452.4252.7253.021.91%7.18%53.3453.6453.962000
200154.2854.6054.921.52%6.39%55.2055.5055.8056.0856.3856.681.44%6.23%56.9857.2657.562001
200257.8658.1458.441.19%5.72%58.7259.0059.2659.5459.8260.120.28%3.87%60.3260.5060.702002
200360.9061.0861.281.23%5.80%61.5861.8662.1662.4662.7663.061.77%6.90%63.4263.7864.142003
200464.5064.8665.240.54%4.40%65.4865.7265.9666.2066.4466.681.19%5.72%67.0067.3067.622004
200567.9468.2668.581.33%6.00%68.9269.2669.6069.9470.3070.641.79%6.94%71.0471.4471.862005
200672.2672.6873.102.85%9.09%73.6474.2074.7475.3075.8676.420.50%4.32%76.7076.9677.242006
200777.5277.8078.081.55%6.45%78.5078.9279.3279.7480.1880.601.21%5.76%80.9881.3681.762007
200882.1482.5282.921.53%6.41%83.3683.8084.2484.6885.1285.582.42%8.22%86.1686.7487.322008
200987.9088.5089.102.46%8.30%89.7090.3290.9491.5492.1892.80-2.78%0.00%92.8092.8092.802009
201092.8092.8092.801.53%6.41%93.2893.7894.2894.7895.2895.780.77%4.87%96.1696.5696.942010
201197.3297.7298.120.37%4.05%98.4498.7899.1099.4499.78100.102.30%7.98%100.76101.42102.082011
2012102.74103.42104.101.53%6.41%104.64105.20105.76106.32106.88107.441.10%5.54%107.94108.42108.922012
2013109.42109.92110.420.88%5.09%110.88111.34111.82112.28112.76113.240.59%4.50%113.66114.08114.502013
2014114.94115.36115.780.59%4.50%116.22116.64117.08117.52117.94118.380.92%5.17%118.88119.40119.902014
2015120.42120.92121.440.74%4.80%121.92122.40122.88123.38123.86124.36-0.80%1.67%124.54124.70124.882015
2016125.06125.22125.400.77%4.87%125.90126.40126.92127.42127.94128.460.08%3.46%128.82129.20129.562016
2017129.94130.30130.681.38%6.11%131.34132.00132.66133.32134.00134.680.98%5.29%135.26135.86136.442017
2018137.04137.64138.241.24%5.82%138.90139.56140.24140.90141.58142.261.11%5.56%142.92143.56144.222018
2019144.88145.54146.22

From $50.00 to $146.22 over 19.5 years = 5.58% average annual increase compounded semi-annually.

Generated  05/01/18  10:10