As can be seen from Table 4 and Figure 6 a, the GML index reflecting the change in TIE shows that, from 2009 to 2016, the TIE of HTI in all provinces (municipalities) along the B&R line presents an overall trend of fluctuation and increase, decreasing yearly from 2013 to 2015 and then increasing significantly from 2015 to 2016.
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Has the High-Tech Industry along the Belt and Road in China Achieved Green Growth with Technological Innovation Efficiency and Environmental Sustainability?
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Therefore, although the technical efficiency of HTI declined every year on average, the technological progress was increased, so it still showed an increasing trend in the input-output efficiency of whole technological innovation activities.