Note: X-axis is time, with 1999 equivalent to time 0 and 2014 equivalent to time 15; Y-axis is number of laws, where laws providing protection are coded as “1” and laws limiting protection were coded as “−1” for each state at every time point. Using the three-group solution, we refer to states categorized in Class 1 as “Increasing trajectory of policy support,” those in Class 2 as “Consistently high policy support,” and those in Class 3 as “Consistently low policy support.”