You did a stellar job! I made a couple suggestions for minor changes. Let me know if you have questions about any of these and good luck on your paper :)

please help my with corrections, thank you in advance

This The ("the" is also correct, but "this" sounds a bit better) chart illustrates the differences in consumption rate of vegetables and fruit by men, women, and children in the UK for 8 years in the period from 2001 to 2008.
It is clear that the overall intake of fruit and vegetables increased significantly during the mentioned period, ; despites the slight decrease in the last three years. In addition, women were the top of the three consumers of fruits (although "fruit" can also be plural, when we say "fruits and vegetables" in that order, we always add an "s") and vegetables, followed by men, then children.
Women's consumption has gradually increased from 2001 to 2006, to reach its top level of 35% of the entire whole ("entire" is more formal, which helps in an academic paper) consumption rate. That value represented twice that in the beginning of the period I am unsure what this sentence is referring to (what is "that" value? and when is the beginning of the period again?) Unexpectedly, Unlikely men and children showed a constant rate of consumption for the first three years, f. Followed by a gradual increase increment to reach its maximum in 2006 and 2007. Children's intake rates were around 26% and men's were 28%.
As tThe differences in rates fluctuated over the period. Women consumed more than men by about 25% and more than children by about 50%. Those differences had doubled in 2003. Furthermore, men's rates overpowered overcome that of children by 25% also. Thought those variations were in the first three years, it (try to be more specific about what "it" is) was reduced significantly in the last three years.