Context:
- Provided table was given as the answer to the provided question.

Instructions: 
- Explain the findings from the tables in text format.
- Provide detailed analysis of the findings in a paragraph.
- Do not just repeat the information present in the table.
- Please be succinct.


Question: What is the average difference between sales value and sales targets across years ?
Table:
year,avg(sales_value),avg(sales_target)
2018,3781.6355456965366,3796.409334516412
2019,3401.6448865698694,3397.5540471869394
2020,4035.8023563696975,4057.030899250615
2021,3909.11020933275,3912.212734409074 Limit your response to 250 words.
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