Figure 4.
The number of published articles by year is presented in a line graph. The horizontal axis represents years from 1997 to 2026. The vertical axis represents published articles from zero to 12. The line fluctuates across the period. It reaches zero in 1998, 2004, and 2005. It rises to high points in 2009, 2016, 2018, and 2025. It declines after 2025 and ends lower in 2026.Annual scientific production on DCs
Note(s): The figure reports annual publication counts based on the final sample of 140 articles drawn from 22 selected journals. The year 2026 is excluded, as the data for that year are incomplete and would not provide a reliable representation of publication activity
Source: Authors’ own work