求翻译：本文通过对历年出口退税调整的分析，发现其从最初的拉动经济增长、扩大出口规模逐渐转向了优化出口结构、促进产业升级方面。是什么意思？

In this paper, the analysis of the calendar year, the export tax rebate adjustment, found from the initial spur economic growth, expand exports gradually shifted to optimize the export structure, and promote industrial upgrading.

This article by the calendar year of the export tax rebate adjustment analysis and found that it was originally from the drop-down economic growth, the expansion of exports gradually turned to the Optimize export structure, promoting industrial upgrading.

This article through to all previous years exportation tax reimbursement adjustment analysis, discovered it from the initial fuel economic growth, the expanded exportation scale changed the optimized exportation structure, the promotion industry promotion aspect gradually.

This article is through the analysis over the adjustment of export tax rebate and found it initially drove economic growth, expanding the scale of exports gradually shifted to optimize the structure of exports and promote industrial upgrading.

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