The following data pertains strictly to what I have collected for this section of the website as represented in Table I. This seems to me to be a large enough sample to analyze more closely and gain useful insights.
The following charts are from a subset of the Table I data for the time period from 1954 through 1969. This still contains the vast majority of the data points, but narrows the focus to the height of the period of activism and resistance to that activism.