[SUGGESTION] Years on x axis, and as param ?

[eddelbuettel]

This is truly lovely.

Two suggestions about changes I might make (and as always feel free to ignore ...)

• using months as the x-axis label is suboptimal as at these horizons we tend to reason in years not months
• the cutoff for period length is too short: a 30 old tech gazillionaire who may have to simulate 60 years :grinning: so maybe make that a parameter ?