Can you help me correct my ielts writing task 1

The line graph compares three different countries namely the USA, Mexico and Canada in terms of their percentage of population using the internet from 1999 to 2009.

Overall, the proportion of internet users of both three nations increased over the period of 10 years. Although all trends were similar according to a general rise, the percentage of Mexico was the least in all years.

In 1999, there was 20% of the total Americans accessing the internet, followed by 10% and around 5% those of Canadians and Mexicans respectively. The figure for Canada then rose dramatically and overtook that of the USA at around 45% in the year 2001. After a 10-year period of growing, the proportion of Canadians getting access to the internet recorded 100% in 2009.

By 2005, there was a similar percentage of people in the United States and Canada who connected to the internet, at 70% each. At the end of the period, 80% the USA's citizens used the internet, twice as much as that of Mexico.