Figure 1
The horizontal axis is labeled “Years”, starting at 2011 on the left and ending at 2023 on the right, with each year shown at equal intervals. The vertical axis is labeled “Value” and displays numerical values ranging from 1.1000 at the bottom to 1.7000 at the top in increments of 0.1000 units. Five distinct lines are plotted in the graph, each representing a different dimension. The legend at the bottom identifies these lines as “Smart and Green”, “Economic Efficiency”, “Supporting Capability”, “Integration and Openness”, and “Comprehensive Level”. The “Smart and Green” line begins at approximately 1.32 in 2011 and shows a generally increasing trend across the years, reaching about 1.67 by 2023, with steady growth particularly after 2019. The “Economic Efficiency” line starts near 1.23 in 2011, shows small fluctuations during the early years, and then increases gradually after 2018, ending at approximately 1.55 in 2023. The “Supporting Capability” line begins at around 1.19 in 2011, rises steadily over time, and reaches about 1.63 by 2023. This line shows a noticeable upward movement after 2016 and continues to increase consistently through the later years. The “Integration and Openness” line starts near 1.28 in 2011 and increases slowly with minor fluctuations, remaining lower than most other lines throughout the period and ending at about 1.43 in 2023. The “Comprehensive Level” line begins at approximately 1.25 in 2011 and follows a smooth upward trend, with gradual increases across the years, reaching around 1.59 by 2023. Note: All numerical data values are approximated.International Competitiveness Level of Shandong Port Cluster from 2011 to 2023. Source(s): Authors’ own creation