i think a small addition to this chart (but not requiring any data not already gathered) would significantly increase its value and interest. in particular, ad

i think a small addition to this chart (but not requiring any data not already gathered) would significantly increase its value and interest. in particular, adding one small column (about the same width as the "Types" column) with a sparkline having five points, connected by a single line and which represents the Spectrum Ranking for the years 2012 - 2016 with this, the reader could see for each language the five-year trend in their Spectrum Index. two languages might be next to each other on this chart, yet one might be trending monotonically downward, while the other might be trending sharply and consistently upward. so for instance, look at places 26 - 29: Rust, Delphi, Fortran, and D. Those are contiguous, hence have similar Spectrum index values, but the shapes of their last-five-year time series are probably quite different (eg, Rust, sharply upward trend, only perhaps slightly flatter for D, essentially flat for fortran, and perhaps downward for delphi).