I once made one of these for HMRC's self assessment tax calculation[1], it had about a thousand nodes. [1] https://assets.publishing.service.gov.uk/media/5dfa3

I once made one of these for HMRC's self assessment tax calculation[1], it had about a thousand nodes. [1] https://assets.publishing.service.gov.uk/media/5dfa35f4e5274a66f4fb5a65/2020_tcg.zip https://assets.publishing.service.gov.uk/media/5dfa35f4e5274...