Note the conversion value for USD_2021 in the repo differs from the one published in https://toweringskills.com/financial-analysis/cost-indices/ (708.0 compared to 708.8). I imagine changing this value in the repo would require a lot of downstream changes in value assertions for costing tests, so I'm leaving as is.

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.89%. Comparing base (f0c60c4) to head (b69e53c).
Report is 18 commits behind head on main.

@@            Coverage Diff             @@
##             main    #1413      +/-   ##
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- Coverage   77.89%   77.89%   -0.01%     
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  Files         394      394              
  Lines       65079    65079              
  Branches    14389    14389              
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- Hits        50695    50692       -3     
- Misses      11795    11799       +4     
+ Partials     2589     2588       -1     

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@hunterbarber @bpaul4 We need to be careful about changing values like this; whilst we might not test against it, others might be using the values and this would be an unexpected change for them. If there is good cause for the change then we can consider it, but we would also need to discuss backward compatibility.