Figure 1
The horizontal axis is labelled “Year” and ranges from 2001 to 2022, with specific labels provided for 2001, 2005, 2010, 2015, 2020, and 2022. The left vertical axis is labelled “F S D Score (percent)” and ranges from 2.8 to 2.95 in increments of 0.05 units. The right vertical axis is labelled “ln E P U” and ranges from 4 to 5.5 in increments of 0.5 units. Two distinct lines represent the F S D score and ln ( E P U). The first line represents “F S D Score” (left axis): it starts at (2001, 2.96), drops to (2002, 2.92), rises to (2004, 2.95), and reaches a peak at (2006, 2.96). It then generally declines with fluctuations, passing through (2015, 2.89) and (2018, 2.89), before ending at (2022, 2.80). The second line represents “ln (E P U)” (right axis): it starts at (2001, 4.8), drops to a low around (2005, 4.3), then rises sharply to a local peak at (2011, 5.15). After a decline to (2014, 4.5), it rises again to reach its highest peak at (2020, 5.50), before ending at (2022, 5.1). Note: All numerical data values are approximated based on year-end figures.Trends of EPU and FSD Score, 2001–2022. Source: Authors’ own work