Date Google Chrome Firefox 17 Nov. 74.1 0 24 Nov. 87.5 0 1 Dec. 68.2 18.2 8 Dec. 83.3 8.3 15 Dec. 74.1 14.8 22 Dec. 73.3 6.7 29 Dec. 75 14.3 5 Jan. 75 12.5 12 Jan. 77.8 11.1 19 Jan. 97.4 0 26 Jan. 74.2 9.7 2 Feb. 95.5 1.5 9 Feb. 73.9 4.3 16 Feb. 61.1 5.6 23 Feb. 77.3 0 2 Mar. 65.2 13 9 Mar. 77.3 13.6 16 Mar. 70 10 23 Mar. 79.3 3.4 30 Mar. 91.9 0 6 Apr. 83.3 0 13 Apr. 79.3 10.3 20 Apr. 80.8 7.7 27 Apr. 73.7 10.5 4 May 64.7 11.8 11 May 76.5 17.6 18 May 80.6 3.2 25 May 78.3 6.5 1 Jun. 69.4 5.6 8 Jun. 73.3 13.3 9 Jun. 100 0