Hey there! The writing sample looks very good. Please see my suggested corrections below. Let me know if you have any questions! [In] the following diagram we can see [delete 'the'] information about global sales of three different products. [During] the period from 2000 until 2003, people spent almost 20 billion dollars ['$20 billion' is also acceptable, it is your choice] on this [which category does 'this' refer to?] category. However, it [which product] was still the least popular product among the three represented. ['Likewise' I'm not sure this is the right connecting word here. 'likewise' is used to compare]*, the amount of money spent on DVDs or video [also constantly increased since] 2000. By 2003 [use 'they were' if you are referring DVDs and videos or maybe use 'this category'] almost as popular as CD[s], with more than 20 billion dollars spent. It was the biggest change among the three categories during the period. Finally, the sales of CDs [decreased] every year since 2000. In 2003 it was still the most popular product with more than 30 billion dollars spent worldwide. However, it is clear, that in four year[s] the [sale] of CDs fell from 35 to 32 billion. *instead maybe try 'as you can see' or 'In contrast' (because these sales increased while those from the first paragraph decreased)