Do you have Germany 1914 in your dataset? There's no safe withdrawal rate for that particular data point...
The Germany's data is in since 1901, but there is a gap between 1922-1923, cause the underlying dataset, DMS, has no bonds data for that period.
alt Hacker News
The Germany's data is in since 1901, but there is a gap between 1922-1923, cause the underlying dataset, DMS, has no bonds data for that period.