It’s just a week since Google’s Browser Chrome was launched and it has already snatched Internet Explorer’s market share.

While Chrome accounted for 0.7% of all browsers used last week on average, Microsoft Corp.’s IE lost 1.4 percentage points in market share during the same period, said U.S.-based tracking company Net Applications. Microsoft’s browser ended the week with a 71% share.

All other browser have posted gains at IE’s expense, Firefox’s share climbed by 0.3 points, from 19.5% to 19.8% last week Apple’s Safari from 6.3% to 6.7%, while Opera increased by 0.01 points, ending the week at 0.75%.

Internet Explorer was most affected because of Google Chrome. Chrome’s high point since its Sept. 2 debut was last Friday, when it averaged 1.2% for the day. On Monday, it averaged 0.9%.