Figure 3
The line chart titled “Documents by year” shows the number of documents across years. The horizontal axis is labeled “Year” and displays the labels “2019”, “2020”, “2021”, “2022”, “2023”, and “2024”. The vertical axis is labeled “Documents” and shows values from 4 to 11 in increments of 1. The plotted line connects data points marked on each year. The value at “2019” is 5, at “2020” is 6, at “2021” is 8, at “2022” is 5, at “2023” is 8, and at “2024” is 10. Note: All numerical data values are approximated.Digital marketing and Industry 4.0 trend