the line graph shows the percentage of internet users in three countries from 1999 to 2009

The line graph compares the proportion of people who used the internet in Canada, USA, and Mexico over the period of 10 years.
Overall, there was an upward trend over the period. In comparison, the number of internet users in Canada and USA were larger than Mexico. And there was a gradual increase in Internet usage in Mexico.
In 1999, the proportion of people using the Internet in Mexican was about 10%. The figures for Canada and USA were higher, at about 15% and 20% respectively. In 2095, the Internet users in both Canada ana USA increased significantly to around 70%. While, the figure for Mexico reached just over 25%.
Internet users in Canada overtook USA in 200 and become a country which most of people used the Internet, and hit a highest point at almost 100%, compared to 80% of Americans and 40% of Mexicans.