Looking at just the last six years from the dataset, here are the percent of W3Schools’ visitors using each browser.
The BLUE line represents IE. The PINK represents Firefox. The GREEN represents Chrome.
See data for the whole decade in tables for yourself on W3Schools.
W3Schools is a website for people with an interest for web technologies. These people are more interested in using alternative browsers than the average user. The average user tends to use the browser that comes preinstalled with their computer, and do not seek out other browser alternatives.
Global averages may not be relevant to your web site. Different sites attract different audiences. Some web sites attract professional developers using professional hardware, while other sites attract hobbyists using old computers.
Anyway, the data, over many years, clearly shows the long term trend away from IE, toward standards-based browsers and a more beautiful Internet.