reported my results in the charts below
Is Pop Music Addicted to Hand Clapping?
Dalton Vogler

This info can be displayed much more succinctly via a stacked bar chart. See:
This also makes it clearer that the percentage was relatively constant through 2009–2012, and the increase in handclaps is relatively recent (starting 2014).

Also, as a side note, why are the percentages not whole numbers when the top 100 only has 100 entries? e.g. 2009 is 43.4%, does that mean there was 0.4 of a song with handclaps in the Top 100, or is there some averaging going on based on how long a song was on the Top 100 chart over the year?

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