Column titles:
[1] - Google Chrome
[2] - Firefox
Date          [1]      [2]
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