Figure 1
The vertical bar chart has the title “Number” at the top center. The vertical axis is numbered from 0 to 14 in increments of 2. The horizontal axis displays years from “2006” to “2024,” in yearly increments. Each year has a bar above it. The data from the graph is as follows: 2006: 1. 2007: 2. 2008: 1. 2009: 1. 2011: 2. 2012: 1. 2013: 5. 2014: 4. 2015: 5 2016: 4. 2017: 6 2018: 3. 2019: 8. 2020: 8. 2021: 3. 2022: 8. 2023: 7. 2024: 12.Year of publication of selected articles. Source: Authors' own work