Need fresh eyes to see what I'm missing

Input problems of this sort are often caused by stray or extra characters
(commas, dashes, etc.) in the input files, which then can trigger
automatic conversion to character. Excel files are somewhat notorious for
this.

Bert,

Large volume of missing data at the end of last year. See attached plot.

I'll go through the raw data file to see how those missing data are
presented.

Regards,

Rich
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