As mentioned in other posts regarding IELTS academic writing task 1, data can be either static or dynamic. Static data shows no changes over time, you may get a table or a graph where you need to make comparisons. However, it is important to analyse the task first as in this model answer below the data changes over time. So this is using trends language as it is dynamic data.
Tables sometimes show up in IELTS academic writing task 1. In some cases, they are in a double task such as a pie chart and table or a bar graph and table. In this lesson, we have a table on its own with a lot of data. This is taken from Cambridge IELTS 7, page 30, it is a popular example of a table for IELTS teachers.
Before writing anything you will need to analyse the task. Take around 4 minutes to plan, look at the categories, the countries, the year and the highest and lowest statistics. The grammar tense is important to get right too, you can see below that the table shows data from 2002, so I will write in the past tense.