Why is housing_ben only $2.1B in CPS Tax-Calculator data?

[MaxGhenis]

print(round((recs.s006 * recs.housing_ben).sum() / 1e9, 1))
# 2.1

Advancing to 2018 yields $2.4B.

I couldn't find the explicit targets here, but this is substantially lower than the various totals described in the Housing README:

In Fiscal Year 2014, according to Picture of Subsidized Households around 4.5 million families claimed roughly 36 billion dollars in federal housing assistance benefits (for all programs combined). More specifically, approximately 2.1 million families claimed roughly 16 billion dollars in HCV benefits, approximately 1.2 million families claimed roughly 10 million dollars [Max Ghenis: should this and others below be "billion"?] in PBRA benefits (without smaller programs), while approximately 1 million families lived in public housing which subsidized approximately 5.8 million dollars of rent. The remaining participants and outlays come from the smaller programs listed above.

Correspondingly, 2014 CPS totals indicate that around 6 million families claimed roughly 16.2 billion dollars in federal housing assistance benefits (all programs combined). In our documentation we explain the cause of recipient overreporting, and benefit underreporting.

[MaxGhenis]

Per https://github.com/open-source-economics/taxdata/pull/175 looks like these are monthly not annual, and @andersonfrailey is fixing it.

[MaxGhenis]

It's now $32.6B after updating to tc 0.18.0.