However, the number decreased to 281 (14.6%) in 2017 and 259 (12.9%) in 2018, showing a decreasing trend from 2017 ( Fig. 1 ).
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However, the number decreased to 281 (14.6%) in 2017 and 259 (12.9%) in 2018, showing a decreasing trend from 2017 ( Fig. 1 ).