Figure 4.
The image presents a line graph showing contribution rates over the years 2011 to 2021. The horizontal axis marks the years, while the vertical axis represents contribution rate values ranging from 0 to 0.800. Three lines are plotted: G w with diamond markers, G n b with square markers, and Gt with triangular markers. G n b starts highest at above 0.70 and gradually decreases until 2018 before showing slight fluctuations. G w remains stable around 0.22 to 0.27 with minor increases over time. G t begins below 0.05, rises steadily until 2018, then slightly declines towards 2021. The legend in the top right identifies the series by their respective markers.The evolution trend of the contribution rate of the regional gap in the level of foreign R&D activity in China
Source: Authors’ own work