求翻译：据统计分析，目前农作物病虫害发生的种类较10年前增加了45%，发生频率提高了68%，危害的面积由2500万亩次增加到4000万亩次。是什么意思？

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According to statistical analysis, the current agricultural pests and diseases occur more than it did 10 years ago the types has increased by 45 per cent, 68 per cent increase in frequency of occurrence, and endanger the area increased from 25 million to 40 million mu mu.

According to the statistical analysis, the type 10 years ago which crops plant disease occurred at present increased 45%, had the frequency to enhance 68%, the harm area increased from 25,000,000 Chinese acres times to 40,000,000 Chinese acres times.

According to statistical analysis, current crop pests and increased by 10 in species, 68% increase in frequency, hazard area increased from 25 million to 40 million acres.

According to statistical analysis, current crop pests and increased by 10 in species, 68% increase in frequency, hazard area increased from 25 million to 40 million acres.